How to figure out general formula for partial sums.

Big boi and travis scott are performing at the super bowl. travis scott is 62 years younger than twice big boi’s age. the sum of their ages is 70 years old. use b to represent big boi’s age. write and solve an equation.

Write 5(6x+4)-2(5x-2) in the form a(bx+c) where a,b and c integers and a> 1

In the diagram, ab is tangent to c, ab = 4 inches, and ad = 2 inches. find the radius of the circle.