Solve for (8x16.95)-7.50

THIS IS DUE IN ABOUT 12 MINUTES HURRY I NEED ANSWERS ASAP!!

Using the quadratic formula find the zeros of the given polynomial -5x^2+3x-11

Asocial networking site currently has 400,000 active members, and that figure is predicted to increase by 32% each year. the following expression represents the number of active members on the site after t years.

If f(x) = 3x2 - 2x+4 and g(x) = 5x + 6x - 8, find (f-g)(x).