Elena completed the 100-meter run in 15.58 seconds.
a. how much faster would she have had to run to tie the record

2 5/8 is the final answer! : )

the best buy, is the 4- kilogram bag of lollipops for $18.40.

step-by-step explanation:

i found my answer by dividing the cost of each bag by their respective weights.

14.88 divided by 2 = 7.44

17.29 divided by 3 = 5.77

18.4 divided by 4 = 4.6

24.4 divided by 5 = 4.88

by this, i found that the 4 kilo bag is the best buy.

use this formula:

p(a\b) = p(a and b)/p(b).

take it from here.