Can someone please help me I really need help

The formula to determine energy is e=1/2mv2? what is the formula solved for v?

What do u have to get to pass7th grade math starr

The equation y equals 11 x represents the calories jake burns when cross country skiing, where x is time in minutes and why is the number of calories. the graph shows the calories he burns while playing basketball which activity burns at a faster rate? explain