The function can be used to find the volume of air inside a basketball given its radius. what does v(r) represent? the radius of the basketball when the volume is v the volume of the basketball when the radius is r the volume of the basketball when the radius is v the radius of the basketball when the volume is r

The correct answer option is: the volume of the basketball when the radius is r.

Step-by-step explanation:

V(r) represents the volume of the basketball when its radius is r. So for any value for the radius of the basketball, its volume is going to vary accordingly.

Hence, we can say that the function V(r) is dependent on the variable r which is the radius of the basketball. Therefore, by putting in different values of r, we can find the corresponding value of the volume of the basketball.

step-by-step explanation:

the ratio of red paint to blue paint is always 9/7. that means that, whatever x's value, (4x+12)/(4x-4) has that same ratio. so, set up an equation and cross-multiply to solve for x:

9/7 = (4x+12)/(4x-4)

9(4x-4) = 7(4x+12)

36x - 36 = 28x + 84

8x - 36 = 84

8x = 120

x = 15