5)7÷0.002
6)0.718÷0.2
7)0.0141÷0.003
8)0.24÷0.012
9)1.625÷0.0013
10)47.1÷0.15

all working out otherwise don't

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.

Find the commission on a $590.00 sale if the commission is 15%.

Determine if the equation defines y as a function of x: 2xy = 1. yes o no