Find the vertex of the parabola.f(x) = 8x - x2
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Convert the measurement as indicated.8
qt to cups
A. 32 c B. 16 c C. 35 c D. 70 c
Mathematics
Solve.The sediment on the bottom of a creek is normally 19 cm thick, but a recent flood washed away 
of sediment. How thick is it now?
A. 18.9 cm B. 9 cm C. 180 cm D. 18 cm
Mathematics
Use the product-to-sum or sum-to-product identities to find an identity for the given expression.cos 11? + cos 15?
A. 2 cos 
? cos 1?
B. cos 13? sin 2?
C. 2 cos 13? cos 2?
D. -2 sin 13? cos 2?
Mathematics
Solve the following equations using the quadratic formula.
A. 
B. 
C. 
D. 
E. None of these
Mathematics