Answer:
1.01 minutes
Step-by-step explanation:
The length of the roll is given to be 304 ft, and Bob's velocity is 5ft/s.
Velocity is defined as the rate of change of displacement over time t:

The function can be expressed to make t the subject to calculate time taken by Bob;

Hence, it takes Bob 1.01 minutes to walk the length of the roll.
Answer:
15 miles
Step-by-step explanation:
Steve runs 3.5 miles in 30 minutes (0.5 hours). So his speed is:
r = 3.5 mi / 0.5 h
r = 7 mi/h
If his rate increases to 7.5 mi/h, the distance he runs in 2 hours is:
d = 7.5 mi/h × 2 h
d = 15 mi
First work out the 'multiplier'
3 + 5 + 9 = 17 so Multiplier = 1/17
$558 is the largest share and that equals 9 * 1/17 of x where x is the total amount of money
9x / 17 = 558
x = (558 * 17) / 9 = $1054
So the smallest share = 3 /17 * 1054 = $186 Answer