Donna charges $25.75 for a haircut and $40.50 for a color treatment. donna did 5 haircuts and 3 color treatment each day for 6 days. how much money did donna earn altogether?

Apatient is given 50 mg dose of medicine the medicines effectiveness decreases every hour at a constant rate of 40% what is the exponential decay function that models this scenario how much medicine will be left in the patients system after 2 hours

What statement is true? 2x^2-9x+2=-1

The point a is at –2 and the point b is at 7. marissa would like to divide this line segment in a 4: 3 ratio, and she would like to use the formula x = (x2 – x1) + x1. what values should she substitute into the formula? a = a + b = x1 = x2 =