Plz fast fast plz plz plz divide 44/625 and 220/31.25

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.

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?

Which expression do you get when you eliminate the negative exponents of 4a^2 b^216a^-3 b