Simplify.
A. 24
B. 8
C. 7
D. Not a real number
Answer: C
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Find the requested value of the variable.y varies directly as z. If y = 154 when z = 11, find y when z = 13.
A. y = 196 B. y = 182 C. y = 169 D. y = 121
Find the value. 
A. 11.978 B. 15.784 C. 13.816 D. 28.102
Use the power property to rewrite the expression.log3 y-4
A. 3log4 y-4 B. -3log4 y C. -4log3 y D. 4log3 y
Solve the problem.An office manager is buying used filing cabinets. Small file cabinets cost $4 each and large file cabinets cost $11 each, and the manager cannot spend more than $61 on file cabinets. A small cabinet takes up 5 square feet of floor space and a large cabinet takes up 9 square feet, and the office has no more than 62 square feet of floor space available for file cabinets. The manager must buy at least 5 file cabinets in order to get free delivery. Let x = the number of small file cabinets bought and y = the number of large file cabinets bought. Write a system of inequalities that describes these constraints.
A. 4x + 11y ? 61 9x + 5y ? 62 x ? 5 B. 4x + 11y ? 61 5x + 9y ? 62 y ? 5 C. 4x + 11y ? 61 5x + 9y ? 62 x + y ? 5 D. 4x + 11y ? 61 5x + 9y ? 62 x + y ? 5