Simplify the expression. Assume that all variables represent nonnegative real numbers. y
+ 
- 4y
A. (3x - y)2
B. (3x - y)(3x + y)
C. (2x - y)(2x + y)
D. (2x - y)2
Answer: D
Mathematics
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Perform the indicated operations. Simplify the answer.
? 
A. 10i
B. -
C. 10
D. -
i
Mathematics
The graph of an exponential function is given. Match the graph to one of the following functions. 
A. f(x) = 
x
B. f(x) = - 4x
C. f(x) = 4x
D. f(x) = - 
x
Mathematics
Find the first term and the common ratio for the geometric sequence. Round approximations to the nearest hundredth.a2 = 21,875, a7 = 7
A. a1 = 7, r = 5 B. a1 = 35, r = 5 C. a1 = 546,875, r = 0.2 D. a1 = 109,375, r = 0.2
Mathematics
Find the percent. Round to the nearest tenth of a percent.What percent of 2125 roses is 16 roses?
A. 0.8% B. 7.5% C. 17.5% D. 13,281.3%
Mathematics