Arestaurant sells a coffee refill mug for $6.75. each refill costs $1.25. last month keith spent $31.75 on a mug and refills. write an equation you can use to find the number of refills that keith bought.

Jose predicted that he would sell 48 umbrellas. he actually sold 72 umbrellas. what are the values of a and b in the table below? round to the nearest tenth if necessary

Consider this expression and the steps to evaluate it. 4^5(−2)^9/4^8(−2)^3 1. apply the quotient of powers:      (−2)^a/4^b 2. evaluate powers:           c/d select the value of each variable. a = _ b = _ c = _ d = _

Match the one-to-one functions with their inverse functions.