Question 3 O pts
Part 3
1. The image shows the battery usage of a cell phone 9 hours since it was fully charged.
It also shows a prediction that the battery would last 8 more hours.
a) Write an equation for a model that fits the data in the image and gives
Advanced battery usage
the percent of battery power, p, as a function of time since the phone
was fully charged, t. Show your reasoning.
52%
If you get stuck, consider creating a table of values or a scatter plot of the
100%
data.
50%
096
b) Based on your function, what percentage of power would the battery
have 4 hours after this image was taken? What about 5 hours after the
image was taken? Show your reasoning.
9 hr ago
8 hr left
2. Here are two more images showing the battery usage at two later times, before the battery was
charged again.
+ Advanced battery usage
+ Advanced battery usage
29%
7%
100%
100%
50%
50%
0%
0%
14 hr ago
29 min left
13 hr ago
4 hr left
a) How well did the function you wrote predict the battery power 4 and 5 hours since the first image
was taken (that is, 13 and 14 hours after the battery was fully charged)? Explain or show your reasoning.
b) What do you notice about the change in the prediction between t=13 and t=14?

i'm pretty sure it's 477,585,296, but perhaps my math is incorrect.

this story was prepared by jim

mccullaugh in los angeles and

al stewart in new york.

new york the colossal success of "top gun" appears to have dramatically altered madison avenue's

perception of corporate sponsorship

of home video projects.

the paramount home video re- lease, featuring a 60- second diet

pepsi spot, was by no means the

first prerecorded video to carry an advertiser's plug, but it was the

first major theatrical release to do so. in the aftermath of the title's

success, paramount is widely ex- pected to ink a similar deal for

"crocodile dundee" or "star trek

iv" or both.

corporate america's new attraccds push british

recording sales

to 19% gain

london fueled by the compact

disk boom, the value of u.k. manu- facturer shipments of recordings

rose 19% in the 12 -month period ended march 1987, according to the

british phonographic industry.

total value of u.k. shipments for

the period was $755 million for all

configurations. (all value figures

are based on an exchange rate of

$1.68 to the pound sterling.)

cd sales totaled 10.7 million units

worth $121.3 million- compared

with 3.7 million units worth $39.5

million in the prior 12 months -and

accounted for two -thirds of the

overall gain in trade value. at present growth rates, says the bpi, cd

sales for calendar 1987 will reach 20

(continued on page 79)

step-by-step explanation: