Question

Please help would really appreciate it as soon as possible

Answer 1

(a) 4 , (b) 13

Explanation:

(a)

given the expression

1 + 3x ← substitute x = 1 into the expression

= 1 + 3(1) = 1 + 3 = 4

(b)

given the expression

7 - 2x ← substitute x = - 3 into the expression

= 7 - 2(- 3) = 7 + 6 = 13