Use a system of linear equations to solve the problem.A chemist needs 130 milliliters of a 68% solution but has only 36% and 88% solutions available. Find how many milliliters of each that should be mixed to get the desired solution.
A. 55 mL of 36%; 80 mL of 88%
B. 80 mL of 36%; 50 mL of 88%
C. 55 mL of 36%; 75 mL of 88%
D. 50 mL of 36%; 80 mL of 88%
Answer: D
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Solve the problem.For a circle of radius 4 feet, find the arc length s subtended by a central angle of 30°. Round to the nearest hundredth.
A. 6.28 ft B. 376.99 ft C. 2.09 ft D. 4.19 ft
Solve the three-part linear inequality. Graph the solution set on a number line, and express the solution using interval notation.- 
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< 
A. 
B. 
C. 
D. 
Find the location and value of each local extremum for the function.
A. None B. (0, 0) C. (-2, 5), (2, 5) D. (-2, 5), (0, 0), (2, 5)
Write the function using function notation. Let x be the independent variable and y be the dependent variable. Use the letter f to name the function.5x - 3y = 24
A. y = 
f(x) - 8
B. f(x) = 
x - 8
C. y = - 
f(x) - 8
D. f(x) = - 
x + 8