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 decreases.; The profit increases.
c. The graph is concave up.
B. a.
b. The profit decreases.; The profit increases.
c. The graph is concave down.
C. a. 
b. The profit increases.; The profit decreases.
c. The graph is concave up.
D. a.
b. The profit increases.; The profit decreases.
c. The graph is concave down.
Answer: D
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Solve the problem.Lotoff's Fashion Corner received a new line of paisley ties that had a net cost of $29 each. If they were given a series discount of 35/35, find the list price.
A. $8.70 B. $96.67 C. $68.64 D. $12.25
Solve the problem.A building 220 feet tall casts a 70 foot long shadow. If a person looks down from the top of the building, what is the measure of the angle between the end of the shadow and the vertical side of the building (to the nearest degree)? (Assume the person's eyes are level with the top of the building.)
A. 19° B. 71° C. 18° D. 72°
Multiply and simplify.
? 
A. 
B. 
C. 
D. 
Use graphical methods to find all real solutions to the following equation. Express solutions rounded to the nearest hundredth.1.15x4 - 14.98x2 - 9.82x + 24 = 0
A. {-2.52, -2.21, 1.01, 3.72} B. {-3.51, -24, 4.05} C. {-3.72, -1.01, 2.52, 24} D. {-4.05, -24, 3.51}