PLEASE HELP FOR 25 POINTS. PLEASE EXPLAIN ANSWER Erin works out the same amount of time each day. Some days, he runs 5 miles. Other days, he walks 2 miles. He walks 4.2 mph slower than he runs. Determine how fast he runs and how long his workout takes.

What should be done to solve the equation? x+14=21 add 14 to both sides of the equation. subtract 14 from the left side of the equation. add 14 to the left side and subtract 14 from the right side of the equation. subtract 14 from both sides of the equation.

Adj has a total of 1075 dance and rock songs on her system. the dance selection is 4 times the size of the rock selection. write a system of equations to represent the situation.

W-16=-12 solve each one step equation plz