Please help I have 5 mins Write an equivalent expression for the following expressions.

5) 3(x-10) 3x - 30

6) -x-12-4x -5x - 12

7) (8x-4y)+5x +9 13x - 4y + 9_

With this question substitute t=3 and t=5 to determine if the two expressions are equivalent. 4(t + 3) 4t+12 which statements are true? check all that apply. a. the value of both expressions when t =5 is 32. b. the two expressions are not equivalent. c. the value of both expressions when t=3 is 15. d. the value of both expressions when t=5 is 23. e. the two expressions are equivalent. f. the value of both expressions when t=3 is 24.