pls pls im almost done: In how many ways can a team of 4 students be chosen from a class of 8 students if one particular student is already considered inlegible and another particular student already pre-qualified?

Add or subtract polynomial : –12qr? +13rq?

Adriveway is 60-feet long by 6-feet wide. the length and width of the driveway will each be increased by the same number of feet. the following expression represents the perimeter of the larger driveway: (x + 60) + (x + 6) + (x + 60) + (x + 6) which expression is equivalent to the expression for the perimeter of the larger driveway? a) 2(x + 66) b) 4x + 33 c) 4(x + 33) d) 4(x + 132)

Don't know how to find x given these segment lengths