Factor completely.16y2 + 72y - 40
A. 8(2y + 1)(y - 5)
B. prime
C. (16y - 8)(y + 5)
D. 8(2y - 1)(y + 5)
Answer: D
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Provide an appropriate response.
If C(x) = 8x + 1,000 and A(x) = 
, R(x) = $20x, and P(x) = R(x) - C(x), then if x = 200, P(x) =
A. 1,400 B. 1,200 C. 1,600 D. 1,800
Let v and w be two vectors in the plane with given magnitudes. The angle between v and w is ?. Find the expression. Round the answer to the nearest tenth.
= 13, 
= 11, ? = 70°
Find 
A. -73.8 B. 17.0 C. 13.9 D. 19.7
Find the probability.The age distribution of students at a community college is given below. Age (years)Number of students (f)
1097?A student from the community college is selected at random. Find the probability that the student is between 26 and 35 inclusive. Round your answer to three decimal places.
A. 0.191 B. 0.046 C. 260 D. 0.237
Assume that x is a positive number. Use the properties of logarithms to write the expression 
as the logarithm of one quantity.
a. 
b. 
c. 
d. 
e. 