If you are buying an item at a store for a price of $21, and there is a 8.7% tax added on top, what would be the total amount due at the register to the nearest cent

In exponential growth functions, the base of the exponent must be greater than 1,how would the function change if the base of the exponent were 1? how would the fiction change if the base of the exponent were between 0and 1

How many solutions does the nonlinear system of equations graphed below have?

What is 617.3 miles and each gallon of gas the car can travel 41 miles select a reasonable estimate of the number of gallons of gas karl used.