Which is a factor of 2x2 + 8x − 90?
x + 2
x − 15
x + 9
x − 4

Solve each quadratic equation by factoring and using the zero product property. x^2 + 18x = 9x

The frequency table shows the results of a survey comparing the number of beach towels sold for full price and at a discount during each of the three summer months. the store owner converts the frequency table to a conditional relative frequency table by row. which value should he use for x? round to the nearest hundredth. 0.89 0.90 0.92 0.96

Which statement best describes how to determine whether f(x) = x squared- x +8 is an even function ?