Solve the problem.The area of the rectangle shown is 35 in.2. Find the length and the width of the rectangle. 2x + 5 
A. length: 15 in.; width 1 in.
B. length: 5 in.; width 7 in.
C. length: 17.5 in.; width 17.5 in.
D. length: 6 in.; width 6 in.
Answer: B
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Solve the problem.The formula D = 8e-0.6hcan be used to find the number of milligrams D of a certain drug that is in a patient's bloodstream h hours after the drug has been administered. The drug is to be administered again when the amount in the bloodstream reaches 4 milligrams. What is the time between injections?
Fill in the blank(s) with the appropriate word(s).
Rewrite the expression with a positive rational exponent. Simplify, if possible.(9-1/4 ? 253/4)-2
A. 
B. 
C. 375
D. 128
Solve the problem involving related quantities.The president of a certain university makes three times as much money as one of the department heads. If the total of their salaries is $240,000, find each worker's salary.
A. president's salary = $120,000; department head's salary = $60,000 B. president's salary = $18,000; department head's salary = $6000 C. president's salary = $180,000; department head's salary = $60,000 D. president's salary = $60,000; department head's salary = $180,000
Find the exact value of the expression.sin 190° cos 70° - cos 190° sin 70°
A. - 
B. - 
C. 
D. 