Question

Evaluate each expression if r=2, =-3, and t = 5.17. 2r + 3t18. 4 s – 3r19. rst – st

Answer 1

17) Answer = 19

18) Answer = -18

19) Answer = -15

Step-by-step explanation

We are asked to evalute the expressions if

r = 2, s = -3 and t = 5

17) 2r + 3t

r = 2, t = 5

2r + 3t

= 2(2) + 3(5)

= 4 + 15

= 19

18) 4s - 3r

s = -3, r = 2

4s - 3r

= 4(-3) - 3(2)

= -12 - 6

= -18

19) rst - st

r = 2, s = -3, t = 5

rst - st

= (2)(-3)(5) - (-3)(5)

= -30 - (-15)

= -30 + 15

= -15

Hope this Helps!!!