Answer:
-31
Step-by-step explanation:

Answer: it’s C
Step-by-step explanation:
-3x+5y=80 if the x = -10 and y = 10
x+5y=40 if the x= -10 and y= 10
The answer is 24.5
Remember to follow P.E.M.D.A.S
14+2+3(4)-(6.5-3)=
14+2+12-(3.5)=
28-(3.5)=
24.5
Hope it helps
Probably the last one
Use the equation for the area of a triangle 1/2(bxh)
Then multiply that number by 2 to get the area of the complete shape.