Question

i. If a person takes first plan and calls for 90 minutes in a month then how much

amount he will have to pay whose cost for a month is given by y = 0.25x + 20

a. ₹ 20

b. ₹ 40

c. ₹ 42.50

d. ₹45​

Answer 1

Step-by-step explanation:

The correct Answer will be (c) 42.50

Answer 2

c. ₹ 42.50

He will have to pay ₹ 42.50 for a month.

Given:

The person takes first plan and calls for 90 minutes in a month. Cost for a month is given by y = 0.25x + 20

To find:

How much amount he will have to pay whose cost for a month is given

Step-by-step explanation:

Here, cost for a month is given by

y = 0.25x + 20 ... ... (1)

Putting x = 90 in (1), we get

y = 0.25 × 90 + 20

➜ y = 22.50 + 20

➜ y = 42.50

Thus he will have to pay ₹ 42.50 for a month.

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