Gretchen finished her first lap in the 200 m freestyle event in 28.78 seconds. she completed the second lap in 31.31 seconds. by how much did her time increase in the second lap?

her time increased 2.53 seconds

Step-by-step explanation:

subtract 28.78 from 31.31 to get how much her time increased.

she was supposed to add the hours(38.5) and multiply the amount of money she earned(7.50) resulting in $288.75 .

correct me if i'm wrong and if it is i'm truly sorry.

x:       y:  

-1         4

0         4

1         6

2         18

3         20