Complete.420 min = hr
A. 3
B. 7
C. 168
D. 17
Answer: B
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Identify the vertex of the given parabola.f(x) = x2 + 8
A. (0, -8) B. (0, 8) C. (8, 0) D. (-8, 0)
Find the value for the function.Find f(x + h) when f(x) = 
.
A. 
B. 
C. 
D. 
Solve the problem.When a dead body is discovered, one of the first steps in the ensuing investigation is for a medical examiner to determine the time of death as closely as possible. If the temperature of the medium has been fairly constant and less than 48 hours have passed since death, Newton's law of cooling can be used. Newton's law of cooling states, 
, where k is a constant, T is the temperature of the object after t hours, and TM is the (constant) temperature of the surrounding medium. Assuming the temperature of a body at death is 98.6°F, the temperature of the surrounding air is 69°F, and at the end of one hour the body temperature is 90°F, when will the
temperature of the body be 76°F? Round to the nearest tenth of an hour. A. 2 hr B. 0.7 hr C. 4.2 hr D. 0.3 hr
Solve.Charlotte invested $6000 in money market funds. Part was invested at 15% interest, the rest at 11% interest. At the end of each year the fund company pays interest. After one year she earned $764 in simple interest. How much was invested at each interest rate?
A. $2400 at 15%; $3600 at 11% B. $2600 at 11%; $3400 at 15% C. $2600 at 15%; $3400 at 11% D. $2400 at 11%; $3600 at 15%