Juanita bought one cd for $7.99 and one dvd for $8.99. the sales tax on these items was 7%. she also bought lunch for $4.25, including tax. if juanita started with $40, how much does she have now?

Michelle and julie work at a catering company. they need to bake 264 cookies for a birthday party that starts in a little over an hour and a half. each tube of cookie dough claims to make 36 cookies, but michelle eats about 1/5 of every tube and julie makes cookies that are 1.5 times as large as the recommended cookie size. it takes about 8 minutes to bake a container of cookies, but since julie's cookies are larger, they take 12 minutes to bake. a. how many tubes should each girl plan to bake? how long does each girl use the oven? b. explain your solution process what did you make? c. what assumptions did you make?

The sum of the squares of two numbers is 8 . the product of the two numbers is 4. find the numbers.

Simplify using positive exponents only.