7x+12=x<6 solve to find x

Solve the problem by making up an equation. a child is 12 years old, and his father is 32 years older. in how many years will the age of the father be 3 times the age of the child?

How many $20 bills do you need to have to make $280

Ab based on the given diagram, if m_1 = 60° then m 2 = 30 60 90 180