A certain substance in an experiment was being stored at −2.4°F. It was then placed on a table where the temperature was raised by 5.3°F. What was the new temperature of the substance?

7.7°F

2.9°F

−2.9°F

−7.7°F

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The following frequency table relates the weekly sales of bicycles at a given store over a 42-week period. value01234567frequency367108521(a) in how many weeks were at least 2 bikes sold? (b) in how many weeks were at least 5 bikes sold? (c) in how many weeks were an even number of bikes sold?

If t17 = 3 (t5) in an arithmetic progression, find t1 in terms of d.