Solve the system by the method of substitution. Check your solution(s) graphically.
a. (0, 4), (0, –8)
b. (0, 0), (4, 8)
c. (0, 0), (–4, –8)
d. (0, 0), (4, –8)
d. (0, 0), (4, –8)
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Simplify the expression. Express the answer so that all exponents are positive. Whenever an exponent is 0 or negative, we assume that the base is not 0.(6x3)-2
A. 36x6
B. 
C. 
D. 
Solve the problem.Don James wants to invest $69,000 to earn $6140 per year. He can invest in 
bonds paying 
per year or in a Certificate of Deposit (CD) paying 
per year. How much money should be invested in each to realize exactly $6140 in interest per year?
A. $44,000 in B-rated bonds and $25,000 in a CD B. $26,000 in B-rated bonds and $43,000 in a CD C. $43,000 in B-rated bonds and $26,000 in a CD D. $25,000 in B-rated bonds and $44,000 in a CD
Solve the problem.An open box is to be constructed from a square sheet of plastic by removing a square of side 2 inches from each corner, and then turning up the sides. If the box must have a volume of 242 cubic inches, find the length of one side of the open box.
A. 15 in. B. 10 in. C. 11 in. D. 13 in.
Find the solution(s) (if any) of the system of equations by the graphical method. If the equations are dependent, write your answer with x being arbitrary.
A. {(8, -6)} B. {(x, 10 - 2x)} C. {(4, 6)} D. inconsistent