Find the product.(-5x + 8)(x + 11)
A. -5x2 - 49x + 88
B. -5x2 + 88x - 47
C. -5x2 - 47x + 88
D. -5x2 - 47x - 47
Answer: C
Mathematics
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Solve the system of equations by substitution. x + y = 02x + 3y = -7
A. (6, -6) B. (7, -7) C. (-7, 7) D. (-6, 6)
Mathematics
Write with positive exponents only.
A. 36z10
B. 
C. 
D. 
Mathematics
Solve the problem.If an object is propelled upward from a height of 64 feet at an initial velocity of 64 feet per second, then its height after t seconds is given by the equation 
where h is in feet. After how many seconds will the object reach a height of 128 feet?
A. 1 sec B. 4 sec C. 2 sec D. 8 sec
Mathematics
Write the system of equations associated with the augmented matrix. Do not solve.
A. x = 1 y = 1 B. x = -4 y = -5 C. x = 4 y = 5 D. x = 0 y = 0
Mathematics