Identify the largest number expressible in a simple grouping system with the specified base and specified number of distinct symbols.base b, eight distinct symbols (where b is any counting number 2 or greater)
A. b8
B. b8 - 1
C. 8b - 1
D. 8b -1
Answer: B
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Solve and check your answer.x + 7 = 15
A. 8 B. 9 C. 10 D. 7
Solve each problem.The cost of a computer system increases with increased processor speeds. The cost C of a system as a function of processor speed is estimated as 
where S is the processor speed in MHz. Find the processor speed for which cost is at a minimum.
A. 0.2 MHz B. 0.3 MHz C. 3.6 MHz D. 1.4 MHz
Write and solve an equation to answer the question. Round your answer to the nearest whole number, if necessary.53 hotels is 112% of what number of hotels?
A. 470 B. 12,500 C. 47 D. 125
Use the problem-solving strategy for applications of linear equations to solve the application problem.Bert is 26 kilometers away from Brenda. They begin to walk toward each other at the same time. Bert walks at 4 kilometers per hour. They meet in 4 hours. How fast is Brenda walking?
A. 2.5 km/hr B. 4 km/hr C. 4.5 km/hr D. 3.5 km/hr