A rock is thrown into a pool 72 inches deep. The rock sinks at a rate of 4 inches per second (s). The rock's height (h) above
the bottom of the pool is given by the equation h = 72 - 4s
After how many seconds will the rock be half way to the
bottom?

What is the rotational symmetry of a wheel

Jenisey has $24 to spend on seven pencils. after buying them she had $10. how much did each pencil cost.?

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?