salomomtawachi2028 salomomtawachi2028 30-05-2023 Mathematics contestada Colbie is x years old. Selena is 7 years older than Colbie. Four times Selena’s age is equal to 200. (a) Write an equation that could be used to solve for Colbie’s age, x. (b) How old is Colbie? Show all work. (c) How old is Selena? Show all work.