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Question (11)

QN009139

In the expression y=7x+10, the quantity grows by:

(A) 7 units
(B) 10 units
(C) 17 units
(D) 70 units

Correct Answer: A

Explanation:

Coefficient of x gives the growth rate.

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Question (12)

QN009140

A savings account starts with ₹1000 and increases by ₹200 every month. How much money will be there after 9 months?

(A) ₹2600
(B) ₹2700
(C) ₹2800
(D) ₹2900

Correct Answer: C

Explanation:

1000+200×9=2800

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Question (13)

QN009141

Which graph represents linear growth?

(A) A straight line sloping upward
(B) A straight line sloping downward
(C) A circle
(D) A parabola

Correct Answer: A

Explanation:

Positive slope indicates growth.

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Question (14)

QN009142

Which graph represents linear decay?

(A) Horizontal line
(B) Upward straight line
(C) Downward straight line
(D) Curved line

Correct Answer: C

Explanation:

Negative slope indicates decay.

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Question (15)

QN009143

A school bus fare is ₹300 plus ₹20 per kilometre. What is the fare for 15 km?

(A) ₹500
(B) ₹550
(C) ₹600
(D) ₹650

Correct Answer: C

Explanation:

300+20×15=600

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Question (16)

QN009144

The expression P=900−45d represents:

(A) linear growth
(B) linear decay
(C) quadratic growth
(D) exponential growth

Correct Answer: B

Explanation:

Quantity decreases by 45 each day.

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Question (17)

QN009145

A refrigerator loses ₹1500 in value every year from an initial value of ₹18,000. What will be its value after 4 years?

(A) ₹10,000
(B) ₹11,000
(C) ₹12,000
(D) ₹13,000

Correct Answer: C

Explanation:

18000−1500×4=12000

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Question (18)

QN009146

A staircase grows by 2 steps every stage starting from 5 steps. How many steps are there at Stage 7?

(A) 15
(B) 17
(C) 19
(D) 21

Correct Answer: B

Explanation:

5+(7−1)×2=17

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Question (19)

QN009147

The temperature of a freezer decreases by 3°C every hour from 12°C. What will be the temperature after 5 hours?

(A) –3°C
(B) –2°C
(C) –1°C
(D) 0°C

Correct Answer: A

Explanation:

12−3×5=−3

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Question (20)

QN009148

Which expression represents the freezer temperature after h hours?

(A) 12+3h
(B) 3h−12
(C) 12−3h
(D) 15h

Correct Answer: C

Explanation:

Temperature decreases by 3°C each hour.

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Question (11)

In the expression y=7x+10, the quantity grows by:

Explanation:

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Question (12)

A savings account starts with ₹1000 and increases by ₹200 every month. How much money will be there after 9 months?

Explanation:

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Question (13)

Which graph represents linear growth?

Explanation:

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Question (14)

Which graph represents linear decay?

Explanation:

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Question (15)

A school bus fare is ₹300 plus ₹20 per kilometre. What is the fare for 15 km?

Explanation:

Link:

Question (16)

The expression P=900−45d represents:

Explanation:

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Question (17)

A refrigerator loses ₹1500 in value every year from an initial value of ₹18,000. What will be its value after 4 years?

Explanation:

Link:

Question (18)

A staircase grows by 2 steps every stage starting from 5 steps. How many steps are there at Stage 7?

Explanation:

Link:

Question (19)

The temperature of a freezer decreases by 3°C every hour from 12°C. What will be the temperature after 5 hours?

Explanation:

Link:

Question (20)

Which expression represents the freezer temperature after h hours?

Explanation:

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