Write an equation to describe the relationship and solve the problem.y varies directly as x. If y = 4 when x = 48, find y when x = 24.
A. y = 12x; 2
B. y = 
x; 24
C. y = 
x; 2
D. y = 
x; 48
Answer: C
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Replace the polar equation with an equivalent Cartesian equation. 9r cos ? + 2r sin ? = 1
A. 9y + 2x = 1
B. 9x + 2y = 1
C. 9x + 2y = x2 + y2
D. 
+ 
= 1
The most popular type of graph for depicting data in percentage form is a __________ graph.
A. bar B. line C. circle D. histogram
The following question refers to a country with six states. There are 300 seats in the legislature and the percent of the population in each state is given in the table below.
Find each state's apportionment under Adams's method.
A. A: 43; B: 161; C: 16; D: 49; E: 19; F: 12 B. A: 44; B: 160; C: 16; D: 49; E: 19; F: 12 C. A: 43; B: 162; C: 16; D: 50; E: 18; F: 11 D. A: 43; B: 160; C: 16; D: 50; E: 19; F: 12 E. none of these
Solve the problem.The half-life of plutonium-234 is 9 hours. If 10 milligrams is present now, how much will be present in 2 days? (Round your answer to three decimal places.)
A. 8.572 B. 6.91 C. 0.248 D. 2.143