If the mean is subtracted from every number in a data set, and the differences are
used to form a new data set, that data set must have a mean:

Find the sum of 4x^{2} -4+6 and -7^{2} +3x+1

James adds two numbers a + b. sally adds the same two numbers but reverse the order b + a what property of addition assures us that james and sally will get the same sum

Danielle earns a 7.25% commission on everything she sells at the electronics store where she works. she also earns a base salary of $750 per week. what were her sales last week if her total earnings for the week were $1,076.25?