What is 15 decreased by twice a number in an algebraic expression?

a store offer 20%of all items if x is the orginal purchase price, which expression represent the final price with the discount

The cost of your new book bag is $11.50 more than the cost c of your old backpack. you pay $47 for your new backpack. write and solve an equation to find the cost of your old backpack

What two numbers multiply to 75 and add too - 20

5x+10y+15z=60 2x+4y+6z=60 x+2y+3z=60

Consider the quadratic function f (x) = x^2-8x-9 Vertex: (-b/2a, f (-b/2a)) What is the vertex of the function (__,__)

Find the gcf and lcm of 20 and 12

Verify the identity. cot (x minus pi divided by two). = - tan x

Which explains why the sequence 64, 4, 1/4, ... is arithmetic or geometric? A. The sequence is geometric because it decreases by a factor 1/16 B. The sequence is arithmetic because it decreases by a factor of 1/16 C.

1) write down a different ratio equivalent to 12 : 3 2) write down a different ratio equivalent to 30 : 24

A person standing close to the edge on top of a 56-foot building throws a ball vertically upward. The quadratic function h (t) = - 16 t 2 + 104 t + 56 h (t) =