Solve the problem.Liz ran 35 mi, 38 mi, and 20 mi during three weeks. How many miles must she run the fourth week to give her an average of 30 miles per week?
A. 30.8 mi
B. 30 mi
C. 27 mi
D. 31 mi
Answer: C
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Evaluate the double integral over the given region.
R = {(x, y): 3 ? x ? 10, 8 ? y ? 9}
A. 
B. 
C. 
D. 
Use the table to find the instantaneous velocity of y at the specified value of x.x = 1.
A. 2 B. 1 C. 1.5 D. 0.5
Solve. If needed, round money amounts to two decimal places and all other amounts to one decimal place.The manager of a coffee shop has one type of coffee that sells for $7 per pound and another type that sells for $15 per pound. The manager wishes to mix 60 pounds of the $15 coffee to get a mixture that will sell for $9 per pound. How many pounds of the $7 coffee should be used?
A. 240 pounds B. 120 pounds C. 180 pounds D. 90 pounds
Answer the question about percent. Round to the nearest whole number where necessary.16 is 9% of what number?
A. 144 B. 178 C. 18 D. 1780