A boating club rents sail boats for $60 for the first hour and $20 for each additional hour. When you return your boat, your fee is $140. Write and solve an equation to find how many hours you kept the boat.

Let x = the number of hours you rented the boat

$140 = $20x + $60.

Subtract 60 from both sides

$80 = $20x

Divide each side by 20.

4 = x.

You rented the boat for 4 hours

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step-by-step explanation:

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step-by-step explanation:

let

we know that

the y-intercept is the y-coordinate of the point when the value of x is equal to zero

so

the y-coordinate of the point a is the y-intercept

the answer part a) is

the value of y-intercept is

part b) find the slope m

we know that

the value of the slope is equal to

substitute the values

therefore

the answer part b) is

the value of the slope is equal to

the general answer is

the slope is

the value of y-intercept is