What is the rate $2.50 for 10 items, as a unit rate? $1.25 for 5 $0.25 each $25 each $0.50 each

Factor completely. 4p^2 + 36p + 81 express the answer in the form (ap + b)^2

Triangle xyz has vertices x(1,3), y(0,0)

1. are the corresponding angles congruent 2. find the ratios of the corresponding sides 3. is triangle jkl congruent to triangle rst? if so what is the scale factor