Use substitution to solve the system.
-5x+2y = -18
y = 2x - 7

x=
y=

Answer this question! 30 points and brainliest!

Factor this polynomial completely x^2-64

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.