Problems #4-7: Write an equation to model each scenario. 4. The total cost C of an item selling for x dollars if the sales tax rate if 6.75%. 6. A right circular cylinder with heighth and base radius r has a total surface area of 90 square inches. Express the volume of the cylinder as a function of r. 5. The total cost is $8400 increased by 7% plus $9.25 for each item produced. 7. A rectangle with base x and heighty has a perimeter of 175 ft. Express the area A of the rectangle as a function of its base x.
Problems #4-7: Write an equation to model each scenario. 4. The total cost C of an item selling for x dollars if the sales tax rate if 6.75%. 6. A right circular cylinder with heighth and base radius r has a total surface area of 90 square inches. Express the volume of the cylinder as a function of r. 5. The total cost is $8400 increased by 7% plus $9.25 for each item produced. 7. A rectangle with base x and heighty has a perimeter of 175 ft. Express the area A of the rectangle as a function of its base x.
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Transcribed Image Text:Problems #4-7: Write an equation to model each scenario.
4. The total cost C of an item selling for x
dollars if the sales tax rate if 6.75%.
6. A right circular cylinder with heighth and base
radius r has a total surface area of 90 square
inches. Express the volume of the cylinder as a
function of r.
5. The total cost is $8400 increased by 7% plus
$9.25 for each item produced.
7. A rectangle with base x and heighty has a
perimeter of 175 ft. Express the area A of
the rectangle as a function of its base x.
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