Mallory guessed the weight of her dog as 60 pounds. the dog's actual weight is 72 pounds. which proporation can be used to find the percent error in mallory's guess?

Simplify the expression. -2/5(10+15m-20n)

Suppose your school costs for this term were $4900 and financial aid covered 3/4 of that amount. how much did financial aid cover? and how much do you still have to pay?

Find the domain of the following expression: 1/(√x)-2