Question

1. The sales of digital cameras (in millions of units) in year t is given by the function

f(t) = 3.05t + 6.85 (0 ≤ t ≤ 3)

where t=0 corresponds to 2001. Over the same period, the sales of film cameras (in millions of units) is given by

g(t) = −1.85t + 16.85 (0 ≤ t ≤ 3).

When did the sales of digital cameras first exceed the sales of film cameras? Give the year and approximate month when this occurred.

( Please show work)

2. In a survey of 1000 adults aged 18 and older, the following questions was posed: Are other travelers’ online reviews trustworthy? The participants were asked to answer “yes,” “no,” or “not sure.” The survey revealed that 370 answered “no” or “not sure.” It also showed that the number of those who answered “yes” exceeded the number of those who answered “yes” exceeded the number of those who answered “no” by 340. What percentage of respondents answers “yes,” “no,” and “not sure”?

(Please show work)

Answer 1