The sides in each pair of figures are proportional. Find the missing length.
A. 6 ft
B. 23 ft
C. 12 ft
D. 36 ft
Answer: C
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Solve the problem.The decay of 956 mg of an isotope is given by 
where t is time in years. Find the amount left after 33 years.
A. 161 mg B. 322 mg C. 925 mg D. 311 mg
Find the effective rate of interest.4
% compounded quarterly
Fill in the blank(s) with the appropriate word(s).
Solve the problem.Jason purchased rose plants and sunflower plants for his garden. Rose plants cost $7 each, and sunflower plants cost $13 each. If his spending limit was $240, write an inequality to show the possible combinations of rose plants and sunflower plants he could have purchased.
A. 7x + 13y ? 240 B. 13x + 7y ? 240 C. 13x + 7y ? 240 D. 7x + 13y ? 240
Solve the problem.A $166,000 trust is to be invested in bonds paying 7%, CDs paying 5%, and mortgages paying 9%. The bond and CD investment must equal the mortgage investment. To earn an $12,480 annual income from the investments, how much should the bank invest in bonds?
A. $43,000 B. $40,000 C. $41,000 D. $83,000