Which products result in a perfect square trinomial? check all that apply.

a=(–x + 9)(–x – 9)
b=(xy + x)(xy + x)
c=(2x – 3)(–3 + 2x)
d=(16 – x2)(x2 – 16)
e=(4y2 + 25)(25 + 4y2)

Which statements are true? see picture

Which point is on the line y=-2+3? (-2,-1) (3,3) (3,-3) (-3,-9)

Idont understand math at all! : o( use this scenario to answer the remaining questions: brenton purchased a new bedroom set for $4,500.00. he lives in arizona and pays a 8.75% sales tax. if he made a 50% down payment and financed the rest, what amount did he finance? what is the total sales tax brenton will pay? enter your answer in currency format, round to the nearest cent. what was brenton's total amount financed? enter your answer in currency format, round to the nearest cent.