Answer:
The rate is 6.43%
Step-by-step explanation:
Given
--Interest
-- Principal
--Time
Required
Determine the rate
Using simple interest formula:

Make R the subject

Convert time to years



Substitute values for I, P and T



Convert to percentage


140>120
70% of 200>3/4*160
Answer:
40%
Step-by-step explanation:
To find the percentage difference between the families with 2 dogs and the families with no dogs, we need to find their difference first.
Difference = 45 - 27
= 18
Now that we know the difference, we just have to put the difference over the total as a fraction and multiply by 100%.
Percentage difference =
× 100%
= 40%
Answer:
7
Step-by-step explanation:
First, plug-in f(-3) into t in the function:

Second, multiply -2 and -3 to get 6:
⇒
Third, add 6 and 1 to get your answer:
⇒