Y = 6x - 15
(8,?)....x = 8, so sub in 8 for x and solve for y
y = 6(8) - 15
y = 48 - 15
y = 33......(8,33)
(-1,?)
y = 6(-1) - 15
y = -6 - 15
y = - 21.....(-1,-21)
(5,?)
y = 6(5) - 15
y = 30 - 15
y = 15......(5,15)
If 2x+y=5, then y=5-2x, so he substituted 5-2x correctly.
x+4x=5x, so he combined like terms correctly.
If 5x-10=10, then 5x=10+10 -> 5x=20, so he subtracted 10 from the right side instead of adding 10 to the right side.
The answer is C.
Here's the correct solution:
Answer:
A. 904.32 ft cubed
Step-by-step explanation: