Evaluate the expression according to the replacement value given.5x2 + 7x; replace x with 4.
A. 108
B. 68
C. 52
D. 48
Answer: A
Mathematics
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Multiply.(-5x + 5)(-2x + 12)
A. 10x2 - 70x + 60 B. -7x2 - 70x + 60 C. -7x2 - 70x - 70 D. 10x2 - 70x - 70
Mathematics
Multiply.0 ? 12
A. 1
B. 0
C. 
D. 12
Mathematics
Solve the problem. Use 3.14 for ?.Find the area of the circular racetrack.(Round to the nearest foot.) r = 95 ft R = 130 ft 
A. 24,728 ft2 B. 28,339 ft2 C. 15,386 ft2 D. 53,066 ft2
Mathematics
Without graphing, determine whether the graph of the quadratic function opens up or opens down. Also, determine of the graph will be wider or narrower than the graph of y = x2.f(x) = - 
x2 + 5x - 6
A. up, narrower B. down, narrower C. up, wider D. down, wider
Mathematics