Decide whether the composite functions, f ? g and g ? f, are equal to x.f(x) =  , g(x) = x2

A. Yes, no
B. No, no
C. Yes, yes
D. No, yes


Answer: B

Mathematics

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Solve the inequality, then graph the solution.-12 < -5b + 3 ? 8  

A. [-1, 3)

B. (-3, 1]

C. [-3, 1)

D. (-1, 3]

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Let  and compute the Riemann sum of f over the interval , choosing the representative points to be the left endpoints of the subintervals, using two subintervals of equal length

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

A. (5, -6), (5, 6) B. (5, 6), (6, 5), (-5, -6), (-6, -5) C. (5, 6), (-5, 6), (5, -6), (-5, -6) D. (-5, -6), (-6, -5)

Mathematics

Solve the problem.The temperature, t, in degrees Fahrenheit, of water  65 + m where m is the number of minutes since heating began. How long will it take for the temperature of the water to reach 70 degrees Fahrenheit?

A. 17 min B. 40 min C. 14 min D. 20 min

Mathematics