Question

considerando a expressão algébrica 3× + 24, calcule o valor numérico, quando: a) × = 2
B) × = -2
C) × = 0
D) × = 2,5

Answer 1

P= 3x+24

a) × = 2
P= 3.2+24
P= 6+24
P=30

B) × = -2
P= 3.(-2)+24
P= -6+24
P= 18

C) × = 0
P= 3.0+24
P= 0+24
P= 24

D) × = 2,5
P= 3.2,5+24
P= 7,5+24
P= 31,5