Am I right Please help me asap

Solve the equation - 2(m -30) = -6m a-15 b-13 c-8 d8

You have 12 balloons to blow up for your birthday party. you blow up 1/3, and your friend blows up 5 of them. what fraction of the baloons still need blowing up

If p(a) = 0.70 and p(b) = 0.20, then a and b are independent events if