#### Answer

E(h)=5h+7

#### Work Step by Step

If I make 5 dollars an hour from babysitting, and I get a 7 dollar tip, then 5=slope and 7=y-intercept. This is because if the function is a function of the number of hours that I work, then as the x values (representing hours) increase by one unit, the y values (representing earnings in dollars) will increase by 5. The y-intercept is representative of the amount that I've earned without babysitting at all. Therefore, if
y=mx+b, then in this case,
E(h)=5h+7