They look like two zeros, no matter how far or close. they are indispensable for some people, but useless for other people. what are they?

Gretchen is setting up for a banquet. she has 300 chairs and needs to distribute them evenly among t tables. how many chairs should she put at each table? write your answer as an expression.

Evaluate the expression for the given value of the variable. 5×(h+3) for h=7

Which of the following expressions is equal to 2x^2+8