Sami read 12 books in 7th grade. In 8th grade she read 18 books. What is the percent of increase on the number of books that Sami read

50% Increase

Step-by-step explanation:

first you can find half the number of the first amount

then in the case it is 6 so 12+6=18.

20

Step-by-step explanation:

The percent of increase is 20%.

In order to solve this problem you have to solve this equation:

18-15/15

3/15

0.2 = 20%

x^6

step-by-step explanation:

this is correct because:

x-6=0

0*x=0

so

x^6

the equation for this situation is y=122+45. to solve the equation you would add 45 and 122 to get a total of 167lbs. in conclusion, grace's weight eight weeks ago was 167lbs.