How many ways can you write the ratio 7: 20 as a fraction without zeros at the end?

Given f(x) = 17-x^2what is the average rate of change in f(x) over the interval [1, 5]?

Iwant to know what 3g+5h+4g-2h is my teacher is too selfish to tell us

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?