Perform the indicated operation and, if possible, simplify.
(
+ 
)
A. 
+ 
B. 
? 
C. 42 + 
D. 
+ 7
Answer: D
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Simplify the expression by using a sum or difference identity.cos(13k) cos (6k) - sin(13k) sin (6k)
A. sin(19k) B. cos(7k) C. cos(19k) D. sin(7k)
Solve the problem.A caterer uses special stacking ovens to prepare large amounts of food. Find the total number of servings that can be prepared in one hour.Meatloaf: 12 servings per panNumber of pans per oven: 5Pan changes per hour: 2Number of ovens: 3
A. 120 servings B. 310 servings C. 360 servings D. 180 servings
An open box is to be constructed from a piece of cardboard 24 cm by 35 cm by cutting squares of side length x from each corner and folding up the sides, as shown in the figure.
?
?
(a) Express the volume V of the box as a function of x.
?
__________
?
(b) What is the domain of V? (Use the fact that length and volume must be positive.)
?
__________ < x< __________
?
(c) Draw a graph of the function V and use it to estimate the maximum volume for such a box. Please round the answer to the nearest whole number.
?
__________ cm3
What will be an ideal response?
Find a matrix A and a column matrix B that describe the following tables involving credits and tuition costs. Find the matrix product AB, and interpret the significance of the entries of this product.
?
A. AB = 
Tuition for Student 2 is $1083 and tuition for Student 1 is $881.
B. AB = 
Tuition for Student 1 is $1083 and tuition for Student 2 is $881.
C. AB = 
Tuition for Student 1 is $1068 and tuition for Student 2 is $864.
D. AB = 
Tuition for Student 2 is $1068 and tuition for Student 1 is $864.