Answer:
The time (t) it takes to clean an office building is <em><u>directly</u></em> <em><u>related</u></em> to the number of people (p) working.
t is proportional to p

Answer:
15ft
Step-by-step explanation:
the square root of 225 is 15, so the answer is 15ft
15×15=225
638-243 = 395 miles
rounding up, it would be 400 miles
8 (3)-10
24-10=14
Hope this helped :)