At 6: 00 a. m., there were 800,000 gallons of water remaining in a reservoir. after 8 hours of irrigation, there were 100,000 gallons of water remaining. write a linear equation that describes the number of gallons of water remaining as a function of the time the field had been irrigated.

WR(t) = 800000 - 87500t

Explanation:

t is the time in hours.

WR(t) is the Water Remaining as a function of the time, in gallons.

WR(t) = 800000 - 87500t

Explanation:

t is the time in hours.

WR(t) is the Water Remaining as a function of the time, in gallons.

WR(t) = 800000 - 87500t

Explanation:

t is the time in hours.

WR(t) is the Water Remaining as a function of the time, in gallons.

The problem states the initial amount of water in the reservoir is 800000 gallons.

Then we need to find the amount of water spent each hour. For this we know that after 8 hours, 100000 gallons remain.

In other words:

800000 - 100000 = 700000 gallons have been spent in 8 hours.

Which gives a ratio of 700000 / 8 = 87500 gallons per hour.

Writing all together, the linear equation is built by taking the initial amount of water and subtracting the ratio of water spent, multiplied for the time variable:

WR(t) = 800000 - 87500t

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:

a. she will receive a refund of $278.

step-by-step explanation: