Answer:
10/4= 2.5 boxes for each friend
Step-by-step explanation:
Hello,
f(n)=50n
n= how many minutes she swims
in one minute, she'll swim 50 meters
f(2)= 50(2)
f(2)=100
etc etc
log2(x) = 5.6
so,
x = 2^5.6 ≈ 48.50293013... ≈ 48.50