Use the given information to find the exact value of the expression.sin ? = 
, ? lies in quadrant I, and cos ? = 
, ? lies in quadrant I
Find cos (? + ?).
A. 
B. - 
C. 
D. 
Answer: B
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Solve the problem.This year, a community recovered 26% of its municipal solid wastes through recycling, up from 17% when the recycling program first began five years ago. Let y represent the percentage recycled and x the number of years since the program began. Find a linear function that fits this data.
A. y = 1.8x + 24 B. y = 1.8x + 17 C. y = -1.8x + 7 D. y = 0.9x - 17
Determine graphically the x-value when y = 6 in the given equation.y = 3x
A. 2;
B. 6;
C. 18;
D. 3;
Simplify the complex rational expression.
A. 
B. 
C. 
D. x - 6
Find f[g(x)] and g[f(x)].f(x) = 5x + 9; g(x) = 4x - 7
A. f[g(x)] = 20x - 26 g[f(x)] = 20x + 29 B. f[g(x)] = 20x + 29 g[f(x)] = 20x - 26 C. f[g(x)] = 20x - 29 g[f(x)] = 20x + 26 D. f[g(x)] = 20x + 26 g[f(x)] = 20x - 29