Question

Hank is working on simplifying the algebraic expression 4x−14
when x=5
. Her steps are as follows:

Step 1: 45−14

Step 2: 20−14

Step 3: 6

In which step did Jenny make a mistake? What should she have done differently?

(1 point)
Responses

Step 2, Jenny should've added 4 and 5 to get 9.
Step 2, Jenny should've added 4 and 5 to get 9.

Step 1, Jenny should've multiplied 4⋅5
instead of writing 5 as the exponent.
Step 1, Jenny should've multiplied 4 times 5 instead of writing 5 as the exponent.

Step 3, 20−14
should be 20÷14
.
Step 3, 20 minus 14 should be 20 divided by 14.

Step 2, Jenny should've calculated the value of 45
to be 1,024.

Answer 1

The mistake in Hank's steps occurs in **Step 1**. Instead of writing \( 45 \), she should have calculated \( 4 \times 5 \), which equals \( 20 \).

So, the correct response is:

**Step 1, Jenny should've multiplied 4 times 5 instead of writing 5 as the exponent.**