Solve the problem.The daily profit for a product is given by P = 36x - 0.02x2 - 1600, where x is the number of units produced and sold.a. Graph this function for x between 0 and 2100.b. Describe what happens to the profit of this product when the number of units produced is between 1 and 900. What happens after 900 units are produced? c. Is the graph of this function concave up or down?
A. a. 
b. The profit increases.; The profit decreases.
c. The graph is concave up.
B.
a.
b. The profit decreases.; The profit increases.
c. The graph is concave up.
C. a.
b. The profit decreases.; The profit increases.
c. The graph is concave down.
D. a.
b. The profit increases.; The profit decreases.
c. The graph is concave down.
Answer: D
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Identify the specified numbers.The imaginary numbers in the following list:
, 9, 
, -6.8, -0.22, 
, 
, 
A. 
, 
, 
B. 
, 9, 
, -6.8, -0.22, 
, 
, 
C. 
, 
, 
D. 
, 
, 
, 
, 
Solve the problem.Two cylindrical cans of beef stew sell for the same price. One can has a diameter of 8 inches and a height of 3 inches. The other has a diameter of 7 inches and a height of 5 inches. Which can contains more stew and is, therefore, a better buy?
A. They are both equally good buys. B. The can with the diameter of 8 inches is the better buy. C. The can with the diameter of 7 inches is the better buy.
Add or subtract as indicated. Write the answer in simplest form.- 
- 
A. - 
B. - 
C. - 
D. - 
Verify that each equation is an identity.cos(4?) = cos4 ? - 6 sin2 ? cos2 ? + sin4 ?
What will be an ideal response?