Please help it’s due today

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.

The measurement of one angle of a right triangle is 42° what is the measurement of the third angle? (there is no picture)

What is the solution to this system of linear equations? 2x + 3y = 3 tx-3y= 24