Solve.How long will it take for $2200 to grow to $20,000 at an interest rate of 6.6% if the interest is compounded quarterly? Round the number of years to the nearest hundredth.
A. 34.54 yr
B. 138.87 yr
C. 33.72 yr
D. 134.87 yr
Answer: C
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Solve the problem.As part of her retirement savings plan, Patricia deposited $100 in a bank account during her first year in the workforce. During each subsequent year, she deposited $45 more than the previous year. Find how much she deposited during her twentieth year in the workforce. Find the total amount deposited in the twenty years.
A. $1000; $22,000 B. $955; $10,550 C. $955; $21,100 D. $1000; $11,000
Solve the problem.A doctor has told a sick patient to take vitamin pills. The patient needs at least 20 units of vitamin A, at least 5 units of vitamin B, and at least 21 units of vitamin C. The red vitamin pills cost 
each and contain 8 units of A, 1 unit of B, and 3 units of C. The blue vitamin pills cost 
each and contain 4 units of A, 1 unit of B, and 6 units of C. How many pills should the patient take each day to minimize costs?
A. 4 red, 1 blue B. 5 red, 0 blue C. 3 red, 2 blue D. 2 red, 3 blue
Find the indicated intercept(s) of the graph of the function.y-intercept of f(x) = 
A. 
B. (0, 0)
C. 
D. (0, 14)
Find the largest open intervals where the function is concave upward.f(x) = x3 - 3x2 - 4x + 5
A. (1, ?) B. (-?, 1) C. None D. (-?, 1), (1, ?)