Add or subtract. Express the answer as a mixed number.13
- 
A. 12
B. 11
C. 12
D. 13
Answer: C
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Solve the problem.Joan can mow a 4-acre field in 5 hours. How long would it take her to mow a 3.6-acre field? (Round to the nearest hundredth.)
A. 6.50 hr B. 7.50 hr C. 4.50 hr D. 4.00 hr
Simplify the expression.(18 + 10) ? (22 - 16)
A. 4.67 B. 34 C. 168 D. 600
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%
The slope of a line is given. Determine the slope of the line parallel to the line whose slope is given.m = -3
A. m = 
B. m = -3
C. m = 3
D. m = - 