Mia’s mom paid $22.50 for pizzas for a family party.

2a+7+4ahow many terms? how many variables? any like terms? yes noif yes, which ones? what are the coefficients? any constants? yes noif yes, which ones? simplify the expression by combining like terms and constants: how many terms now?

Which expression is equivalent to (3^2)^-2 a.-81 b.-12 c.1/81 d.1/12

Hi my sisters and brothers can tell me the answer because i don’t understand the question