Answer:
g(1) = -6
Step-by-step explanation:
g(x) = -2x^2 - 4x
You want to solve for g(1). To do this make every x value in the original equation become 1.
g(1) = -2(1)^2 - 4(1)
Evaluate the exponent.
g(1) = -2(1) - 4(1)
Multiply.
g(1) = -2 - 4
Subtract.
g(1) = -6
Answer:
B. 7.5
Step-by-step explanation:
Its the middle
Using just the information given, the question can't be answered.
You gave us one point on a graph . . . (8, 20) .
Do you realize how many different lines can go through that point ? ! ?
Each line represents a different function, which would have a different
value when x=42.
You told us nothing about how 'y' depends on 'x' .
If y=20 when x=8, then . . .
Maybe y = x + 12 .
Or maybe y = 2x + 4 .
Or maybe y = 3x - 4 .
Or maybe y = 6x - 28 .
From the information you gave us, we have no way to tell.
Answer:
Step-by-step explanation:
-2 (-x +5y ) + 3 (2x - 6y)
Opening bracket
= 2x - 10y + 6x - 18y
= 8x - 28y
= 4(2x - 7y)