Use t = 3 and t = 7 to determine if 6t + 12 and 6(t + 2) are equivalent. which statements are true? check all that apply. the value of the first expression when t = 3 is not equal to the value of the second expression when t = 3. the value of the first expression when t = 7 is not equal to the value of the second expression when t = 7. the value of both expressions when t = 3 is 30. the value of both expressions when t = 7 is 54. the expressions are equivalent. the expressions are not equivalent.