Solve each equation for the variable.

1/2k = 3/4K - 1/2

Find the equation of the trend line (line of best fit). show your work i'm using the points (34,76) (42,91)

Lisa has three classes that each last 50 minutes. what is the total number of minutes of the three classes

In a two-digit number the units' digit is 7 more than the tens' digit. the number with digits reversed is three times as large as the sum of the original number and the two digits. find the number.