Carly is 5 years younger then lisa. lisa is 3 times as old as mark. what is a algebraic expression to represent carly's age, in years if mark is m years old explain

Mark = m

Lisa = 3m ( 3 times as old as Mark)

 Carly = 3m-5 ( 5 years younger than Lisa)

expression is C = 3m-5

a) y = -3x +2

b) y = 1/2x -6

these 2 can be combined into one equation.

-3x +2 = .5x -6

8 = 3.5x

x = 8 / 3.5 = 2.2857142857

y = -3 * (8 / 3.5) +2

y = (-24 / 3.5) + 2

y = -4.8571428571

step-by-step explanation: