Solve the problem.S(x) = -x3 - 3x2 + 72x + 900, x ? 2 is an approximation to the number of salmon swimming upstream to spawn, where x represents the water temperature in degrees Celsius. Find the temperature that produces the maximum number of salmon.
A. 2°C
B. 8°C
C. 4°C
D. 6°C
Answer: C
Mathematics
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Multiply.2500 × 400
A. 999,501 B. 1,000,000 C. 1,001,000 D. 999,000
Mathematics
Provide an appropriate response.Which property justifies the statement?(9 ? 2) ? 6 = 9 ? (2 ? 6)
A. Identity property B. Commutative property C. Distributive property D. Associative property
Mathematics
Multiply the polynomial functions.f(r) = 5r + 3; g(r) = 5r3 - 4r2 + 5r - 5
A. (fg)(r) = 25r4 - 5r3 + 13r2 - 25r - 15 B. (fg)(r) = 25r4 - 32r3 + 13r2 - 10r - 15 C. (fg)(r) = 25r4 - 5r3 + 40r2 - 10r - 15 D. (fg)(r) = 25r4 - 5r3 + 13r2 - 10r - 15
Mathematics
Add or subtract. Express the answer as a mixed number.
A. 3
B. 12
C. 13
D. 13
Mathematics