A freshwater pipeline is to be run from a source on the edge of a lake to a community on an island 5 miles offshore, as shown in the figure. Answer the questions that follow. Island 5 miles X 15-x 15 miles. Source (A) If it costs 1.5 times as much to lay pipe in the lake as it does on land, what should x be (in miles) to minimize the total cost of this project? X = miles (Round to the nearest tenth as needed.)

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
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4.6.20

​(A) If it costs 1.5 times as much to lay pipe in the lake as it does on​ land, what should x be​ (in miles) to minimize the total cost of this​ project?

(b) for  it costs only 1.1 times as much to lay pipe in the lake as it does on land

A freshwater pipeline is to be run from a source on the edge of a lake to
a community on an island 5 miles offshore, as shown in the figure.
Answer the questions that follow.
Island
5
miles
X
15-x
15 miles
Source
(A) If it costs 1.5 times as much to lay pipe in the lake as it does on land, what should x be (in miles) to minimize the total
cost of this project?
X = miles (Round to the nearest tenth as needed.)
Transcribed Image Text:A freshwater pipeline is to be run from a source on the edge of a lake to a community on an island 5 miles offshore, as shown in the figure. Answer the questions that follow. Island 5 miles X 15-x 15 miles Source (A) If it costs 1.5 times as much to lay pipe in the lake as it does on land, what should x be (in miles) to minimize the total cost of this project? X = miles (Round to the nearest tenth as needed.)
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