Solve by addition or substitution. 7x + 9y = 9 4x + 7y = 7
A. (0, 2)
B. (0, 1)
C. (-1, 2)
D. ?
Answer: B
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Find the vertical asymptotes of the rational function. f(x) = 
A. x = 
, x = 
B. x = - 
, x = 
C. x = - 
, x = - 
D. x = - 
, x = - 
Find the exact value under the given conditions.sin ? = 
, 0 < ? < 
; cos ? = 
, 0 < ? < 
Find cos (? + ?).
A. 
B. 
C. 
D. 
Solve.In 1998, the population of Country C was 30 million, and the exponential growth rate was 1% per year. Find the exponential growth function.
A. P(t) = 30e1t, where P(t) is in millions and t is the number of years after 1998. B. P(t) = 30e0.01t, where P(t) is in millions and t is the number of years after 1998. C. P(t) = 30e0.01, where P(t) is in millions and t is the number of years after 1998. D. P(t) = 300.01t , where P(t) is in millions and t is the number of years after 1998.
Use both properties of equality to solve the equation.-32 = 5x + 3
A. -40 B. -7 C. 9 D. -36