Dexter rides his bike 3 1/4 miles each day on Monday, Wednesday, and Friday. On Tuesday and Thursday he rides 7 3/8 miles each day.

How many miles does he ride for the five days?

A. 9 3/4 miles

B. 10 5/8 miles

C. 14 3/4 miles

D. 24 1/2 miles

What is 45 + (-15) + 7

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Find the least number of cables required to connect eight computers to four printers to guarantee that for every choice of four of the eight computers, these four computers can directly access four different printers. Justify your answer.

A number m is at least - 3

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