40.5k views
5 votes
A sports club plans to have its lawn mowed. The cost of mowing x square feet of lawn is given by the function f(x) = 0.04x + 3.5, where f(x) represents the cost in dollars. The total area that needs to be mowed is given by the function g(x) = 12x.

Which function best describes C(x), the total cost of mowing the lawn of the sports club?

A) C(x) = 0.48x + 3.5x
B) C(x) = 0.48x2 + 3.5
C) C(x) = 0.48x2 + 42x
D) C(x) = 0.48x2 + 42

User Lighthink
by
9.0k points

2 Answers

5 votes

D

This is the plato answer

User Anson Yao
by
8.0k points
3 votes
To do this, you would substitute every instance of x in the equation f(x) with the value of the g(x) equation. So, it would be C(x)=0.04(12x)+3.5. First, multiply 0.04 by 12x, which would be 0.48x. Now, your equation is C(x)=0.48x2+3.5. This is answer choice B. Hope this helps!
User Dymetrius
by
8.1k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories