The measure of center is mean. You would be finding the average number of minutes spent studying.
To find the mean of the data you would add all of the numbers up and divide by the total amount of numbers you added.
60+70+45+60+80+35+45
=395
395/7
=<span>56.4285714286</span>
-37,16,51,61
negative numbers are always less than positive numbers
Answer: 79 and 14
X would be -3 because (2 x -3 + 85) is 79 and doing it for (5x + 29) would get 14.
50 miles per hour
264,000 feet in 60 minutes
4,400 feet per minute
73.33... feet per second
73.3 feet per second (rounded to the nearest tenth)!