63. Print Book Sales. The sales of print books increased about 7% from 2012 to 2014. The sales data over the years 2008 to 2014 are modeled by the cubic function s(x) = 4.958r? – 38.125x2 + 26.417x + 778, where x is the number of years after 2008 and S(x) is the number of print books, in millions (Source: Nielsen). Find the number of print books sold in 2009, in 2014, and in 2015.

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step-by-step explanation:

1.true 2.false? ? i think. .

step-by-step explanation:

b

step-by-step explanation:

the equation of a line in point- slope form is

y - b = m(x - a)

where m is the slope and (a, b) a point on the line

calculate m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (0, 4) and (x₂, y₂ ) = (3, - 5) ← 2 points on the line

m = = = - 3

with m = - 3 and (a, b) = (3, - 5), then

y - (- 5) = - 3(x - 3), that is

y + 5 = - 3(x - 3) → b