Answer:
The answers are in the screenshot. There wasn't much information to go by, so if the domain and range (and graph) look a little weird, that's why
since its an isoscelies trangle, they probably wanted you to do base times height
make a 71-91/2-x x triangle
where x is the height of the triangle to the base 91 and 71 is the hypothenuse
and then do bh/2
or
use heron's formula
s= 71+91/2
area= 
have fun solving that
D.
(-3a²b³)(4ab²)
(-3*4)(a²*a)(b³*b²)
(-12)(a³)(b⁵)