Translate the problem to a system of equations, then solve using matrices.Mardi received an inheritance of $40,000. She invested part at 7% and deposited the remainder in tax-free bonds at 9%. Her total annual income from the investments was $3000. Find the amount invested at 7%.
A. $30,000
B. $15,000
C. $37,000
D. $29,000
Answer: A
Mathematics
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Use the information below to determine the indicated set. U = {x | x ? N and x ? 12} A = {x | x ? N and 6 < x < 12} B = {x | x ? N and x is even and x < 12}A ? B'
A. {1, 3, 5, 7, 8, 9, 10, 11, 12} B. {1, 3, 5, 12} C. {7, 9, 11, 12} D. {7, 9, 11}
Mathematics
Find the indicated term of the sequence.5, 7, 9, 11, . . . ; a7
A. 17 B. 15 C. 5 D. 19
Mathematics
Write the number as a binary numeral. ? 48 ? __________two
Fill in the blank(s) with the appropriate word(s).
Mathematics
Solve the problem.The function 
models the amount, f(x), in billions of dollars of new student loans x years after 1993. According to the model, in what year is the amount loaned expected to reach $45.75 billion?
A. 2023 B. 2018 C. 2021 D. 2022
Mathematics