I think dilation, i’m not sure
Answer:

Step-by-step explanation:
You only need to isolate the term a to solve this problem.
Add by 3 from both sides.

Solve.
0+3=3
a/7<3
Multiply by 7 from both sides.

Solve.
3*7=21
<u>a<21</u>
As a result, the solution is a<21, which is our answer.
Answer:
Step-by-step explanation:
The correct value of w is 20 as the width of a rectangle must be positive. A quadratic function always has 2 zeroes and in a case like this the negative one is ignored.
Answer: She lined up the front numbers instead of the decimal places.
Step-by-step explanation:
A correct addition or subtraction in decimals should be lining up decimal places in order to make sure that you are adding or subtracting in the same place.
1.56 + 13.47=15.03
Hope this helps!! :)