Which expressions are equivalent to: –2.5(1 – 2n) – 1.5n

Select all that apply.
 −2.5 − 3.5n
 −2.5 + 3.5n
 −2.5 − 6.5n
 −2.5 − n(5 − 1.5)
 −2.5 + n(5 − 1.5)

Suppose that one doll house uses the 1 inch scale, meaning that 1 inch on the doll house corresponds to 1/2 foot for life-sized objects. if the doll house is 108 inches wide, what is the width of the full-sized house that it's modeled after? in inches and feet.

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?

Given the graphed function below which of the following orders pairs are found on the inverse function