Mark has $5. He buys six ping pong balls. When he gets home he has $2.15. How much did Mark spend?

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.

F(x) = 1/x g(x)=x-4 can you evaluate (g*f)(0) ? why or why not?

Apatient is to be given 35 milligrams of demerol every 4 hours. you have demerol 50 milligrams/milliliter in stock. how many milliliters should be given per dose?