Use the quadratic function to determine if the function has a maximum or minimum value and then find this maximum or minimum value.f(x) = x2 + 20x + 91

A. maximum at (-9, 0)
B. maximum at (-9, -10)
C. minimum at (-10, -9)
D. minimum at (0, -10)


Answer: C

Mathematics

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Simplify the expression. Assume that all variables are positive when they appear.

A. 10y6 B. 100y6 C. 10y12 D. 10y10

Mathematics

Place the correct symbol, < or >, in the blank between the decimals. -31.06  -31.3

A. > B. <

Mathematics

Solve the system of nonlinear equations using the method of elimination.

A. (, 8), (, -8), (-, 8), (-, -8)
B. (, 8), (-, 8)
C. (8, ), (8, -)
D. ?

Mathematics

Provide an appropriate response.Ben drove his car 705 kilometers in 5 hours while he was on vacation in Italy. He was trying to estimate how far he could drive in 8 hours the next day so he set up the following proportion:  Explain why this proportion will not give him the correct answer.

What will be an ideal response?

Mathematics