Solve using matrices.Walt made an extra $7000 last year from a part-time job. He invested part of the money at 9% and the rest at 8%. He made a total of $600 in interest. How much was invested at 8%?
A. $4000
B. $3000
C. $5000
D. $3500
Answer: B
Mathematics
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Solve the equation.-114 + (-19) = 6x + x
A. 1 B. -19 C. -120 D. 120
Mathematics
Solve the problem.The cost of manufacturing clocks is given by c = 9
dollars, where c is the total cost and n is the number produced. What is c when no clocks are produced?
A. $9 B. $81 C. $27 D. $729
Mathematics
Find the indicated premium. Round to the nearest cent. 
Susan Meyer buys a premium term policy at age 25. The policy has a face value of $45,000. Find the monthly premium.
A. $21.29 B. $7.44 C. $18.72 D. $6.54
Mathematics
Factor using the formula for the sum or difference of two cubes.8x3 - 1
A. (2x - 1)(4x2 + 1) B. (8x - 1)(x2 + 2x + 1) C. (2x - 1)(4x2 + 2x + 1) D. (2x + 1)(4x2 - 2x + 1)
Mathematics