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We have fifty pounds of a mixture that is 96% concrete and 4%water. We need to end up with a mixture that if sixty pounds that is 95% concrete and 5% water. Determine the proportions of concrete water...

a federal Commission's annual report on cigarette sales and advertising shows the major cigarette manufacturers spent 14.2 billion dollars on advertising and promotional expenditures in 2003, and...

The FCI message pack 1000 plan includes 1000 text messages per month for \$10. Additional text messages are \$.10 each. If Jean Olsen uses this plan, what is the maximum number of text messages she...

Matt's age is m.  Yolanda's age is one less than the square of matt's age. In four years, Matt will be nine years old. How old will Yolanda be when Matt is nine years old?

the length of the rectan(gler)garden is 32of its width. ∞t takes 50m o edgign to create a border. Find the dimensions of the garden.

−2(3x + 3) ≤ −2x − 18 Solve the linear inequality for the given variable. Simplify and express your answer in algebraic notation.

Mark buys last year's best-selling novel, in hardcover, for \$20.80. This is with a 20% discount from the original price. What was the original price of the novel?

Seth buys last year's best-selling novel, in hardcover, for \$21.75. This is with a 25% discount from the original price. What was the original price of the novel?

The price of a meal plus 13% delivery charge comes to a total cost of \$19.21. What was the price of the meal?

Two investments totaling \$63,500 produce an annual income of \$5155. One investment yields 5% per year, while the other yields 9% per year. How much is invested at each rate?

Two investments totaling \$23,500 produce an annual income of \$795. One investment yields 2% per year, while the other yields 7% per year. How much is invested at each rate?