1oo points and brainliest if ! coach burns charted the change in his runners’ 5k times from the first race of the year to the second race of the year. which student improved the most by decreasing the time needed to run the race?

overall change in 5k times from the first to the second race
runner
time over (+) or under (–) previous run
albert
–15.7 seconds
cody
+1.4 seconds
hannah
+4.5 seconds
yasim
–37.4 seconds

albert
cody
hannah
yasim

Yasmin improved her time the most.

Step-by-step explanation:

We are looking for the student who decreased their time the most (Which means we are looking for the lowest number). Yasmin's change of -37.4 s is the lowest value

Yasmin improve her time more then Albert because she dropped 37.4seconds off her time and he only dropped 15.7 seconds. The other two gained time

n=9

step-by-step explanation:

7 times a number = 7n

decreased by 13 = 7n-13

same as is =

5 times the number = 5n

increased by 5 = 5n+5

7n-13 = 5n+5

2n=18

n=9