Solve the system of equations using matrices. Use Gauss-Jordan elimination.
A. {(-3, 4, 6)}
B. {(6, 4, -3)}
C. {(3, 4, 7)}
D. {(3, 7, 4)}
Answer: C
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Simplify using order of operations.5 - (-6) ? (-8)3
A. 3067 B. 5632 C. -5632 D. -3067
Simplify. Assume that no radicands were formed by raising negative quantities to even powers. 
A. 
B. 
C. 
D. 
Write the first four terms of the sequence.an = (-1)n-3
A. a1 = 1, a2 = -1, a3 = 1, a4 = -1 B. a1 = -1, a2 = 1, a3 = -1, a4 = 1 C. a1 = -1,a2 = -1, a3 = -1, a4 = -1 D. a1 = 1, a2 = 1, a3 = 1, a4 = 1
Use the REGRESSION feature on a graphing calculator.A strain of E-coli Beu-recA441 is placed into a petri dish at 30?Celsius and allowed to grow. The following data are collected. Theory states that the number of bacteria in the petri dish will initially grow according to the law of uninhibited growth. The population is measured using an optical device in which the amount of light that passes through the petri dish is measured. 
Find the exponential equation in the form y = a ? bx, where x is the hours of growth. Round to four decimal places.
A. y = 1.3384 ? 0.0903x B. y = 0.0903 ? 1.3384x C. y = 0.0903x D. y = 1.3384x