Billy currently has $50 in his vacation fund. He earns $35 a week mowing lawns and spends $14 out of the $35 for entertainment. He puts the rest in his vacation fund. Which function can be used to determine a, the amount of money in Billy's vacation fund, in dollars, at the end of w weeks?

Step-by-step explanation:

Let

y ----> the amount of money

x ---> the number of weeks

we know that

The linear equation in slope intercept form is equal to

where

m is the slope

b is the y-intercept or initial value

In this problem we have

The slope is equal to

The y-intercept is equal to

substitute

therefore

For x=w weeks

The function is

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation: