A _____________ is a symbol, usually a letter that stands for a number.

Evaluate the expression a/3+4 when a=6

Evaluate 8y + 12 - 2z for y = 4 and z = 2

The temperature in Celsius can be converted to Fahrenheit using the formula ℉=9/5 C+32. If the temperature is C degrees Celsius, what is the Fahrenheit equivalent of 25 degrees Celsius?

Evaluate the expression when a = 3, b = 4, and c = -6; bc + 5a

Evaluate b^2 + 4 when b = 3

Evaluate the expression 3x + 8 when x = 2

Evaluate (6+x^2-y)÷2 at x=6, and y=6

A number multiplied by a variable in an algebraic expression

Numbers, symbols, and operations that are grouped together

A store sells notebooks for $3 each and pens for $2 each. If n represents the number of notebooks and p represents the number of pens, write an expression for the total cost. If James buys 4 notebooks and 5 pens, what is the total cost?

Evaluate 3(2x + z) when x=8 and z=2