which of the following represents the factorization of the binomial below?
x^2-81
a (x-9)(x-9)
b (x)(x-81)
c (x+9)(x+9)
d (x+9)(x-9)

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 ?

If 25% of y is 30, what is 60% of y?

You earn a 12% commission for every car you sell. how much is your commission if you sell a $23,000 car?