Write an equation representing the situation if p is the price of a meal in dollars. the cost of three meals plus a $7 tip is $40

Acredit card advertises an annual interest rate of 23%. what is the equivalent monthly interest rate?

Acoin bank containing only dimes and quarters has 12 more dimes than quarters. the total value of the coins is $11. how many quarters and dimes are in the coin bank?

Your friend uses c=50p to find the total cost, c, for the people, p, entering a local amusement park is the cost of admission proportional to the amount of people entering the amusement park? explain.