What is the vertex of the quadratic function f(c)=(x-8)(x-2)

Solve with work both bert and ernie received an increase in their weekly salaries. bert's salary increased from $520 to $520. ernie's salary went from $580 to $645. find the percent of increase for each salary. what was the larger of the two percents ?

Asphere has a diameter of 10 in. what is the volume of the sphere?

Henry is an avid reader, he devours 90 pages in half an hour how many pages has henry read per minute?