The graph shows the number of Internet users in Country A for four selected years. The number of Internet users in Country A, in millions, n years after 2000 can be modeled by the formula
U= 3(8n +30)+8(n +1).
a. Simplify the formula.
b. Use the simplified form of the mathematical model to find the number of Internet users in country A in 2006. Does the model underestimate or overestimate the actual number shown by the bar graph for 2006? By how much?
a. The simplified form of the given formula is U = .
b. Using the simplified form of the mathematical model, the number of Internet users in country A in 2006 is million.
(Simplify your answer. Type an integer or a decimal.)
Does the model underestimate or overestimate the actual number shown by the bar graph for 2006? By how much?
(Simplify your answer. Type an integer or a decimal.)
A. overestimates by million
B. underestimates by million