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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.

Algebra: Structure And Method, Book 1
Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter12: Quadratic Functions
Section12.8: Joint And Combined Variation
Problem 12P
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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.
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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