How do i do number 7 because i don't know how to do this and i need , explain.

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

Whose conclusion is correct? choose all that apply. (two max) elijah emily edward esme

Explain step-by-step how to simplify -5(2x – 3y + 6z – 10).