Takuya's parents gave him $100 dollars as a birthday gift. Since he loves board games, he spent $20 out of his present on board games at the end of each month until his money ran out.

Let f(n) be the amount of money that remained from Takuya's present during month n where n=1 represents the month he received his present.

f is a sequence. What kind of sequence is it?

The expression that represents the amount of money Takuya has over the months is "f(n) = f(1) + (n - 1)*r" and the sequence is an arithmetic sequence.

Step-by-step explanation:

Since the initial amount of money Takuya had was 100 dollars and he spent 20 dollars every month, then each element of the sequence is related to it's prior by the sum of -20, therefore it's a arithmetic sequence. In order to calculate the "nth" term of a sequence like this we need to apply the following formula:

f(n) = f(1) + (n-1)*r

f = {100, 80, 60, 40, 20, 0}

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:

look at the picture.

y-intercept for the function on a picture is 4 → point (0, 4).

y-intercept for the function

is for x = 0. substitute:

y-intercept is 8 → point (0, 8).