A crew working with dynamite to clear a road blasted a large rock straight up with
an initial velocity of 140 ft/sec. The rock reaches a height of s(t) = -16t^2 +
140t after t seconds
a) What is the velocity of the rock att seconds?
(1)
b) What is the velocity of the rock after when it is 170 feet above the ground on the
way up?
(t) = 170
c) What is the velocity of the rock when it is again at 170 feet on the way down?
d) When does the rock hit the ground?
e) What is the velocity when it hits the ground?

Asample of 200 rom computer chips was selected on each of 30 consecutive days, and the number of nonconforming chips on each day was as follows: the data has been given so that it can be copied into r as a vector. non. conforming = c(10, 15, 21, 19, 34, 16, 5, 24, 8, 21, 32, 14, 14, 19, 18, 20, 12, 23, 10, 19, 20, 18, 13, 26, 33, 14, 12, 21, 12, 27) #construct a p chart by using the following code. you will need to enter your values for pbar, lcl and ucl. pbar = lcl = ucl = plot(non. conforming/200, ylim = c(0,.5)) abline(h = pbar, lty = 2) abline(h = lcl, lty = 3) abline(h = ucl, lty = 3)

Explain how to graph a scatterplot and its regression line using a regression calculator.

Jackson earns $25 per hour as a tutor at the college library. he set a weekly spending budget of $130 each week and puts the remaining money in his savings account. how many hours must he work this week to have at least an extra $50 to put in his savings account