What is the expression for the calculation double 2 and then add 5? Then use x as the variable

Assume cd | ab are parallel. find m2. a) x= 50° (b) x = 70° c) x = 30° d) x = 60

What is the area of the triangle 10 13 12

If private savings 'v' = 0.75s and total savings 's' equals $4.20 billion, solve for public and private savings.