Evaluate the following expressions for a=-3 | b=1/2 | c= 3/5 | d=-4.
1. 2a +2b
2. 5ac-2b
3. 2b/a

Which of the following answers is 7/9 simplified? 7/9 2/9 11/9 2/7

Lee has $1.75 in dimes and nickels. the number of nickels is 11 more than the number of dimes. how many of each coin does he have?

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.