The variable x is equal to 60
Answer:
y=2x+9
Step-by-step explanation:
Answer:
A. 4-x
Step-by-step explanation:
2x-8+3(4-x)
multiply 3(4-x)
2x-8+ 12- 3x
add -8 and 12
add 2x and -3x
4-x
i believe that A. 4-x is correct.
Answer:
3x^3+3x^2-30x -48
Step-by-step explanation:
we apply distributive property
3(x + 2)(x^2 − x − 8)
so we have:
(3*x+3*2)(x^2 − x − 8)
(3x+6)(x^2 − x − 8)
3x*x^2 - 3x*x -3x*8 + 6*x^2 -6*x -6*8
3x^3-3x^2-24x +6x^2 -6x -48
3x^3+3x^2-30x -48
Point A shows that she is incorrect.
With functions, you can perform the "straight line test through each point. If the line goes through both points, you know it's not a function.
If we plotted point A, it'd fail the straight line test because the given point (-6, 7) already has -6 as an x value.
Hope this helps!