A. -1.3
B. 4.5
C. -5.4
D. 3.1
5x-8y=1...(1)
3x+6y=-21...(2)
(1)*3:
15x-24y=3...(3)
(2)*5:
15x+30y=-105...(2)
(3)-(2):
15x-24y-(15x+30y)=3-(-105)
15x-24y-15x-30y=108
-54y=108
y=-2
Part A=5 inches
Part B=6.25
I know part A but not sure I think thats the answer for part B
Twenty percent of $35 is 0.20($35) = $7. The discount is $7.
