T(d) is a function that relates the number of tickets sold for a movie to the number of days since the movie was released. The average rate of change in T(d) for the interval d=4 and d=10 is 0. Which statement must be true?

y=mx+b

step-by-step explanation:

m is slope, b is y-intercept

i need more details sorry

step-by-step explanation:

42.4 6th grade students prefer hip hop

step-by-step explanation:

40 percent of 106 = 42.4

this is a direct variation proportion. y = kx

y is the total amount due, k is the constant of variation, and x is the number of texts sent.

plug in the 3.20 and the 16 to solve for the "k". this is the constant of proportionality. it is the value that will not change.

3.20 = k(16). solving you get $.20 per text.

the equation would then be y = .20x