The fuel efficiency, in miles per gallon, of 10 small utility trucks was measured. The results are recorded below: 22, 25, 23, 27, 15, 24, 24, 32, 23, 22, 25, 22

Find the variance of these data. Round to the nearest hundredth.

6men can finish the job in 10 days how many men are needed to finish the same job in 12days?

Jordan is enlarging a photo on his computer screen. the photo starts at 4 cm wide. each time the he enlarges the photo,its width is doubled. jordan enlarged the photo four times. what is its final width on the photo on his computer screen?

What is the first four terms of the arithmetic sequence with first term 8 and common difference 3.​