Hiro is riding a carousel that is next to a wall. His horizontal distance C(t)C(t)C, left parenthesis, t, right parenthesis (in \text{m}mstart text, m, end text) away from the wall as a function of time ttt (in seconds) can be modeled by a sinusoidal expression of the form a\cdot\cos(b\cdot t)+da⋅cos(b⋅t)+da, dot, cosine, left parenthesis, b, dot, t, right parenthesis, plus, d. At t=0t=0t, equals, 0, when he starts, he is closest to the wall, a distance of 2\text{ m}2 m2, start text, space, m, end text away. After 7\pi7π7, pi seconds he reaches his mid-way point from the wall, which is 7\text{ m}7 m7, start text, space, m, end text away. Find C(t)C(t)C, left parenthesis, t, right parenthesis. \textit{t}tstart text, t, end text should be in radians.

In the pendulum formula t=2pi. read the problem on the picture ! ; $; $; ! ; ! ; ! ; )$; ! ; ! ; ! ; $; $; $! ; ! ; ); $; $$

The average hourly earnings for a construction worker is projected to be $24.50 in 2012. jason wants to join the construction work force after he graduates in 2012. his friend tells him that average hourly earnings for construction workers will rise by 2% from 2009 to 2012. based on the data below, assuming that the projected hourly earnings are correct, is jason’s friend’s statement accurate? construction industry - average hourly earnings, 2000-2009 a. his friend’s statement is accurate. the average hourly earnings will increase by 2%. b. his friend’s statement is not accurate. the percent increase will be more than 2% c. his friend’s statement is not accurate. the percent increase will be less than 2% d. his friend’s statement is not accurate. the average hourly earnings will decrease

The random variable x represents the number of phone calls an author receives in a day, and it has a poisson distribution with a mean of 8.7 calls. what are the possible values of x