In order to find how many additional workers are needed to staff the extra crews you first need to calculate how many workers are on a crew. There are 8 workers at the company now and that's enough to staff 4 crews so there are \( \frac{8}{4} \) = 2 workers on a crew. 7 crews are needed for the busy season which, at 2 workers per crew, means that the roofing company will need 7 x 2 = 14 total workers to staff the crews during the busy season. The company already employs 8 workers so they need to add 14 - 8 = 6 new staff for the busy season.

If the tiger has consumed 105 pounds of food in 7 days that's \( \frac{105}{7} \) = 15 pounds of food per day. The tiger needs to consume 210 - 105 = 105 more pounds of food to reach 210 pounds total. At 15 pounds of food per day that's \( \frac{105}{15} \) = 7 more days.

An integer is any whole number, including zero. An integer can be either positive or negative. Examples include -77, -1, 0, 55, 119.

The equation for this sequence is:

a_n = a_n-1 + 8

where n is the term's order in the sequence, a_n is the value of the term, and a_n-1 is the value of the term before a_n. This makes the next number:

a₆ = a₅ + 8
a₆ = 33 + 8
a₆ = 41

Average speed in miles per hour is the number of miles traveled divided by the number of hours: