Answer:
7 2/3 minutes
Step-by-step explanation:
We can write this equation in y = mx+b form
where m = 3 ft/min and b = -105 ft
x is the number of minutes and y is the depth
y = 3 * x -105
We want to find when y = -82
-82 = 3x -105
Add 105 to each side
-82+105 = 3x-105+105
23=3x
Divide by 3
23/3 = 3x/3
23/3=x
Changing into a mixed number
3 goes into 23 7 times with 2 left over
7 2/3 minutes
Step-by-step explanation:

Therefore, 32/243 is the answer.
Answer:
.25
Step-by-step explanation:
there is a decimal point at the end of 25% just move that twice to the left and its .25
True, 4+3=7, 5+2=7, and vis versa; 2+5=7 and 3+4=7