An equation was used to predict the number of possible enrollments in an afterschool program for the first 6 months of the year. the actual enrollments are also listed.
actual enrollment 55 80 95 100 115 90
predicted enrollment 75 80 85 90 95 100
the sum of the residuals is

A: 10

Step-by-step explanation:

Let's add the actual enrollments all together. 55 + 80 + 95 + 100 + 115 + 90 all added together is 535. The predicted enrollments, all added together, is: 75 + 80 + 85 +90 +95 + 100 = 525.

535 - 525 = 10 residuals.

the answer is b. 60. each interior angle in 120, so the exterior angle must be 60 in order to add up to 180

step-by-step explanation: