Question

The cost to write an ad in a news paper is $10 plus $0.25 per word. Write an inequality that can be used to find the maximum amount of words Marianne can put in her ad if the most she can spend is $15.

Answer 1

f(x)=10+0.25x

she can put maximum 20 words

Explanation:

f(x)<=15

10+0.25x<=15

0.25x<=5

x<=20

Answer 2

10 + .25 w ≤15

Explanation:

The flat fee is 10 dollars

It is .25 per word

10 + .25w

This must be less than or equal to the amount she has to spend

10 + .25 w ≤15