Evaluate the expression below when x = -4.
4x2 - 2x × 15
-56

Tom wants to order tickets online so that he and three of his friends can go to a water park the cost of the tickets is 16.00 per person there is also a 2.50 one-time service fee for ordering tickets online write an expression in term of n that represents the cost for n ordering tickets online

Haley buys 9 pounds of apples for $3. how many pounds of apples can she buy for $1?

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?