1. How
long will it take to travel 418 miles if you are
traveling at 22 miles per hour?

19

Step-by-step explanation:

19 hours

Step-by-step explanation:

22 mph is 22 miles per hour

22 miles for 1 hour

So all we have to do is divide 418 by 22

418÷22=19

Is an increase by 19, so now we multiply

1 hour x 19 = 19 hours

418 miles would take 19 hours

y = 3x + 1

Step-by-step explanation:

Following the y = mx + b theory, we can find the equation (see attached image) by plugging in two points of the hypothetical graph.

For one pound of salad, Katie will pay $4 ($3 for the salad, $1 for the container). Thus, the first point will be (1,4). For two pounds, Katie will pay $7. Thus, the second point will be (2,7).

Knowing that m (slope) = , we can get the equation m = , thus telling us that m = , or 3. Plug in 3 for m, and you get y = 3x + b.

To solve for b, lets' use the second point (2,7). Plug in the coordinates and you get 7 = 3(2) + b, or 7 = 6 + b. Subtract 6 from both sides and you get b = 1.

Plug in 1 for b and you end up with y = 3x + 1