Simplify 4 x times the fraction 1 over x to the power of negative 5 times x to the power of negative 3.

4x
4x−3
4x3
4

How many different three-digit numbers can be formed using the digits 1 comma 2 comma 9 comma 6 comma 4 comma 3 comma and 8 without repetition? for example, 664 is not allowed.

Find the solution(s) to the system of equations. select all that apply y=x^2-1 y=2x-2

Arestaurant offers delivery for their pizzas. the total cost the customer pays is the price of the pizzas, plus a delivery fee. one customer pays $23 to have 2 pizzas delivered. another customer pays $59 for 6 pizzas. how many pizzas are delivered to a customer who pays $86?