Question

1/2(10x +5) what is the value of the expression when x=1.4

Answer 1

19.2

Explanation:

Rewrite 1/2(10x +5) as (1/2)(10x +5) for clarity.

Next, substitute 1.4 for x:

(1/2)(10[1.4] +5)

According to rules of operation, work inside parentheses must come before all else. Thus we obtain:

(1/2)(14+5), or (1/2)(19). Finally, this simplifies to 19/2.