State whether the parabola opens upward or downward.f(x) = 7x2 + 9x + 5
A. Downward
B. Upward
Answer: B
Mathematics
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Use a calculator to give the value to the nearest degree.? = cos-1(-0.9397)
A. -20° B. 162° C. 160° D. 157°
Mathematics
Find the product, if possible. 
A. 
B. 
C. 
D. Not defined
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Find the transpose of the given matrix.
Fill in the blank(s) with the appropriate word(s).
Mathematics
Solve the absolute value equation.|2x + 9| = 2
A. ?
B. 
C. 
D. 
Mathematics