Question

each friday, the school prints 400 copies of the school newsletter. the equation c = 400w models the relationship between the number of weeks and total number of copies of the newsletter printed. what is true of the graph of this scenario? 1. a viable point on the graph is a. (-2, -800) b. (2.5, 1000)c. (6, 1800)d. (8, 3,200) 2. The values of w must be a. any even numberb. any real numberc. any real number 0 or greaterd. any whole number

Answer 1

1. In order to determine a viable point on the graph, you take into account that there are no negative weeks, then, (-2,-800) is not a viable point.

Then, for the other points, you evaluate the function for the number of weeks, and verify if the number of copies coincides with the given option.

For the point (2.5 , 1000):

w = 2.5

c = 400(2.5) = 1000

Thus, the point (2.5 , 1000) is viable

For the point (6 , 1800):

w = 6

c = 400(6) = 2400

Thus, the point (6 , 1800) is not viable

For the point (8 , 3200)

w = 8

c = 400(8) = 3200

Thus, the point (8 , 3200) is viable

2. The number of weeks is represented in a good way by a whole number (option d))