The cost of buying 1 DVD is $19.99. The cost of buying 1 CD is $9.99. The cost of buying 3 DVDs and 5 CDs is given by the
expression 3 x 19.99 + 5 x 9.99. What is the total cost?

Twenty points. suppose that one doll house uses the 1 inch scale, meaning that 1 inch on the doll house corresponds to 1/2 foot for life-sized objects. if the doll house is 108 inches wide, what is the width of the full-sized house that it's modeled after? in inches and feet

Bo is buying a board game that usually costs bb dollars. the game is on sale, and the price has been reduced by 18\%18%. what could you find the answer?

If a company produces x units of an item at a cost of $35 apiece the function c=35x is a of the total production costs