Find the rate, or speed, as a ratio of distance to time. Round to the nearest hundredth when necessary.61 m, 19 sec

A. 1,159 m/sec
B. 0.31 m/sec
C. 3.21 m/sec
D. 3.11 m/sec


Answer: C

Mathematics

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Solve the problem.A vendor has learned that, by pricing pretzels at $1.00, sales will reach 128 pretzels per day. Raising the price to $2.00 will cause the sales to fall to 80 pretzels per day. Let y be the number of pretzels the vendor sells at x dollars each. Write a linear equation that models the number of pretzels sold per day when the price is x dollars each.

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