Why can a variable be used to represent a number

How would you simplify x 8 over x 3? @irspow

Simplify using the distributive property: 3 (x+2) =

Enter the sum of numbers as a product of their gcf. 42 + 48 the sum of the numbers as a product of their gcf is

Which of the following items has the highest unit price? 3 for $2.19 4 for $3.00 5 for $3.50 $0.72 each

The temperature in Bloomington on Sunday was 32.6°C. On Monday, the temperature changed by - 8.25°C. What was the temperature on Monday?

To which power must you raise the expression y 1/5 to get y as the result

What is C = 2πr? Solve for r.

X varies directly as y, and x = 153 when y = 9. Find x when y = 13. A: 106 B: 157 C: 221

How I get a score from a game?

Write each of the following as a mathematical expression. State whether the expression is linear or nonlinear. If it is nonlinear, then explain why. 1. A number decreased by three squared 2. The quotient of two and a number, subtracted from seven 3.