Solve the problem.A chemist needs 100 milliliters of a 53% solution but has only 43% and 93% solutions available. Find how many milliliters of each that should be mixed to get the desired solution.
A. 80 ml of 43%; 20 ml of 93%
B. 20 ml of 43%; 80 ml of 93%
C. 83 ml of 43%; 20 ml of 93%
D. 83 ml of 43%; 17 ml of 93%
Answer: A
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A. (0, 0, -10)
B. (10, ?, 0)
C. 
D. (0, 10, 0)
Find the GPA for the grade report. Round to the nearest hundredth when necessary.
A. 3.07 B. 2.07 C. 4.07 D. 9.20
Find the solution or solutions, if any exist, to the system.
A. x = 0, y = 0, z = 1
B. inconsistent system, no solution
C. infinitely many solutions of the form x = 8 - 
z, y = 1 - 
z, z = z
D. infinitely many solutions of the form x = - 
- 
z, y = - 
+ 
z, z =z
Find the exact solutions to the quadratic equation, using a method of your choice.x2 + 2x - 8 = 0
A. -4, 2 B. 4, 2 C. 4, -2 D. -4, 1