Weegy: -x^2 - 4x= A. 3 when x= -3 User: Combine like terms. What is a simpler form of the expression?
-3(-4y + 3) + 7y
A. 19y - 9
B. 10y
C. -19y + 3
D. -19y - 9
Weegy: The answer for -3(-4y + 3) + 7y is 19y - 9. (More)

Weegy: D. (x + 6)(x + 8) is the answer. User: Simplify the expression.
(3 + i) - (2 - 2i)
A. 1 + 3i
B. 5 - i
C. 4i
D. -1 - 3i Weegy: B. 5 - i User: The function y = 16t2 + 486 models the height y in feet of a stone t seconds after it is dropped from the edge of a vertical cliff. How long will it take the stone to hit the ground? Round to the nearest hundredth of a second.
A. 7.79 seconds
B. 11.02 seconds
C. 0.25 seconds
D. ... (More)

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