The lunch check is $16.98. Estimate the tip
using a rate of 15%

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

Which of the following expressions is equal to 2x^2+8

Which of the expressions (on the photo document i inserted) together represent all solutions to the following equation? 8cos(12x)+4=-4 *the answer should be in degrees.* > i would like for someone to explain the process to find the solutions for this.