Answer:
25.71%
Step-by-step explanation:
Although the first instinct would be to say that his approval rating changed by 18%, the actual percent change for the candidate's approval rating is given by the difference between both polls (18%) divided by the candidate's approval in the first poll (70%):

The percent change for the candidate's approval rating was 25.71%
1. 50
2. 5
3. 0.5
4. 0.05
5. 0.005
I hope you see the pattern here . When multiplying the exponent (the small number near the 10) determines the number of zeros to the RIGHT . When dividing the number determines how many zeros to the LEFT usually resulting in a decimal. This is called scientific notation.
Hope this helps!:)
Heya!!!
Answer to your question:
C.7n+4 represents the phrase as
Number is n.
Seven times the number means 7n.
Adding four we get,
7n+4
Hope it helps *_*