Astudent is deriving the quadratic formula. her first two steps are shown.

step 1: –c = ax2 + bx

step 2: -c = a[x^2+b/ax]

which best explains or justifies step 2?

division property of equality

factoring the binomial

completing the square

subtraction property of equality

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

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?

Amber wants to know how many blocks of each color will be needed for a tapestry on the number of 40. how many blocks of each color will she make? explain why she needs to identify a new color for this tapestry