The water level in a flooded area has dropped 3 inches per hour. how much higher was the water level 4 hours ago? +7 -7 +12 -12

The vet charges $45 for an office visit and $10 for each vaccination your dog needs. write an eaquation

To solve the system of equations below, grace isolated the variable y in the first equation and then substituted into the second equation. what was the resulting equation? 3y=12x x^2/4+y^2/9=1

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.