select the correct answer. coles age is 3 years less than his sister tinas age, t. if cole is 18, which…

select the correct answer. coles age is 3 years less than his sister tinas age, t. if cole is 18, which equation represents this situation, and how old is tina? a. the equation that represents this situation is t - 3 = 18. tina is 21. b. the equation that represents this situation is t + 3 = 18. tina is 15. c. the equation that represents this situation is 3 - t = 18. tina is 21. d. the equation that represents this situation is -3 - t = 18. tina is 15.

select the correct answer. coles age is 3 years less than his sister tinas age, t. if cole is 18, which equation represents this situation, and how old is tina? a. the equation that represents this situation is t - 3 = 18. tina is 21. b. the equation that represents this situation is t + 3 = 18. tina is 15. c. the equation that represents this situation is 3 - t = 18. tina is 21. d. the equation that represents this situation is -3 - t = 18. tina is 15.

Answer

Explanation:

Step1: Translate the situation into an equation

Cole's age is 3 years less than Tina's age $t$. So Cole's age is $t - 3$. Given Cole is 18, the equation is $t-3 = 18$.

Step2: Solve the equation for $t$

Add 3 to both sides of the equation $t-3=18$. We get $t=18 + 3$.

Step3: Calculate Tina's age

$t=21$.

Answer:

A. The equation that represents this situation is $t - 3=18$. Tina is 21.