Clear fractions then solve by substitution.
- 
= -18
+ 
= -9
A. {(-12, 0)}
B. {(12, 0)}
C. {(x, y)| 3x - y = -108}
D. ?
Answer: A
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Use the graph to estimate the specified limit.
f(x)
A. -1
B. 2
C. 
D. Does not exist
Determine whether the given sequence is arithmetic, geometric, or neither. If the sequence is arithmetic, find the common difference; if it is geometric, find the common ratio.{7n/5}
A. Arithmetic; d = 71/5 B. Geometric; r = 71/5 C. Geometric; r = 7 D. Neither
Solve the problem.The rational function C(x) = 
, 0 ? x < 100describes the cost, C, in millions of dollars, to inoculate x% of the population against a particular strain of the flu. Determine the difference in cost between inoculating 80% of the population and inoculating 50% of the population. (Round to the nearest tenth, if necessary.)
A. $405.0 million B. $404.9 million C. $1.1 million D. $1.0 million
Solve the radical equation. Check all proposed solutions.x - 
= 4
A. x = 2, 9 B. x = -1 C. x = 1, 2 D. x = 9