Answer:
Step-by-step explanation:
common denominators : (x+6)(x+4)
numerators become difference of squares
and 
- = 20
(x+6)(x+4) = 
Between 75 and 98.
Step-by-step explanation:
Let's first have a look at the previous data available:
Friday, 27 dunk teachers out of 215 participants (12.5%)
Saturday: 54 dunk teachers out of 417 participants (12.9%)
Sunday: 39 dunk teachers out of 368 participants (10.6%)
So, based on the previous 3 days, she can expect between 10% and 13% will dunk a teacher.
If she has 750 contestants on Monday, the number of winners should then be in the range of 75 (10% of 750) and 98 (13% of 750).
Answer:
10 days
Step-by-step explanation:
Divide 1 gallon by
0.1 gallon per day:
1 gallon
---------------------- = 10 days
0.1 gallon/day
