Allie knows that to get her test grade she would take valerie's grade, multiply it by two and subtract 15. if valerie's test grade was x, how would you write allies test grade?
a) 2x b) 2x+15 c) 2x-15 d) 15x-2

Problem melissa is her dad build a walkway in their backyard. the walkway will be 54 feet long and 1.5 feet wide. the local hardware store sells tiles which are 1.5 by 1.5 feet and come in boxes of 12. how many boxes of tiles do they need?

Factor -8x3-2x2-12x-3 by grouping what is the resulting expression?

Find the area of the regular hexagon if a side is 20 cm.