Question

A student is evaluating the expression below for n = 3.7

12.3 + 6 (n - 0.5)

In what order should the student do the steps?


Step 1: Substitute _____ for n
Step 2: __________________
Step 3: __________________
Step 4: __________________

Answer 1

1. substitute 3.7 for n
2. parentheses
3. multiplication
4. addition

Answer 2

Given expression : 12.3 + 6 (n - 0.5)

Step 1 : substitute n = 3.7

12.3 + 6 (3.7 - 0.5)

Step 2 : Simplify the parenthesis

12.3 + 6 (3.2 )

Step 3 : Do the multiplication and open the parenthesis

12.3 + 19.2

Step 4 : Add the two number

12.3 + 19.2 = 31.5

So the answer of the given expression when n = 3.7 is 31.5