Gustavo was asked to generate several expressions that would be equivalent to the one below. For each of his expressions determine whether they are in fact equivalent. Select all that apply. 6x+9x-18y

A.3(2x+3x-6y)
b.3xy(5-6)
c. y(15x-18)
d.3(5x-6y)​

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?

Arectangular garden is 5 feet long and 3 feet wide. a second rectangular garden has dimensions that are double the dimensions of the first garden. what is the percent of change in perimeter from the first garden to the second garden?

How is the interquartile range calculated?