Solve the problem.Suppose that the temperature T, in degrees Fahrenheit, during a 15-hr period in winter is given by 
for 0 ? x ? 15, where x is the number of hours since midnight. Sketch the graph of the function. Estimate the minimum temperature and when it occurs. Round answers to the nearest hundredth, if necessary.
A. 
Minimum temperature is 0.46°F;
occurs at 4.61 hours after midnight
B. 
Minimum temperature is 0.46°F;
occurs at 3.42 hours after midnight
C. 
Minimum temperature is 2.31°F;
occurs at 4.61 hours after midnight
D. 
Minimum temperature is 1.43°F;
occurs at 3.42 hours after midnight
Answer: B
You might also like to view...
A ball is tossed upward and then falls to the ground. Its height after t seconds is given by the function 
. During the period the rock is rising, what can be said about 
?
?
A. is positive.
B. is negative.
C. is zero.
D. None of the above
Divide and simplify.
A. 20x4 B. 3x4 C. 3x3 D. 3x8
Solve the problem.In deciding whether or not to set up a new manufacturing plant, analysts for a popcorn company have decided that a linear function is a reasonable estimation for the total cost C(x) in dollars to produce x bags of microwave popcorn. They estimate the cost to produce 10,000 bags as 
and the cost to produce 15,000 bags as 
. Find the marginal cost of the bags of microwave popcorn to be produced in this plant.
A. $45.4 B. $4.54 C. $0.454 D. $2270
Determine the size of matrix A and tell whether it is a square matrix, row matrix, column matrix, or none of these.A = [7]
A. 0 × 0; none of these B. 0; square matrix C. 1 × 1; square matrix D. 1; none of these