Assuming that there are 10 digits used as telephone number and the area code is a fixed 3 digit number. how many numbers could be created?

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.

Adam used 1072.4 gallons of water over the course of 7 days. how much water did adam use, on average, each day?

Which expression and diagram represent “renee biked four times as far this month as last month”?