How to simplify (3x^2+x-8)+(7-2x+3x^2)

Angel entered a triathlon (a three-part race). he swam 1 mile, rode his bike 30 miles, and ran 10 miles. how far did he go altogether? a. 11 miles b. 123 miles c. 41 miles d. 40 miles

Combine the information in the problem and the chart using the average balance method to solve the problem.

Which of the following circles have their centers in the third quadrant? check all that apply.