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Evaluate each algebraic expression for x = 2, -4, 7, -8

a. -5x

b. 3x-7

c. X4 + 5

d. 2+x9


2. Evaluate each algebraic expression


a. Z-(5 x 3+3m ) ; use m=3, and z=2

b. 18/x +x5 – 2 ; use x=6

c. bc- c + 6 ; use b=3, and c=2

d. (7-x2+k)-3 ; use x=4, and k=2