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The public library charges 5¢ per day for an overdue book and 10¢ per day for an overdue magazine. When Jed returned library materials that were 1 day late, he was charged 35¢. How many of the overdue...

The attendance at a basketball game was 400 people. Students tickets cost \$2 and adult tickets cost \$3. Total ticket sales were \$1050. How many tickets of each type were sold?

You order two servings of pancakes and a fruit cup. The cost of the fruit cup is \$1.50. You leave a 15% tip. Your total bill is \$11.50. How much does one serving of pancakes cost?

An actor invests money at 8%, and \$34000 more than four times the amount at 9%. The total annual interest earned from the investment is \$45300. How much did he invest at each amount?

After having the students lay out some cinder blocks for the school garden, the science teacher notices that it would be too difficult for her students to reach the center of the 6-foot-long garden...

Why does the calculation change if you know / don't know the value of the symbols? for example  3a(2d+bc)-4c I get 6ad+3abc-4c. BUT....If the values are given...

4. Today, the U.S. has the equivalent of 400 standard-sized 1000-megawatt power plants. If electrical energy consumption continues to rise at the present rate of 2.8%, how many additional 1000-megawatt...

An object is dropped from 34 feet below the tip of the pinnacle atop a 934-ft tall building. The height h of the object after t seconds is given by the equation h=-16^2 + 900. Find how many seconds...

Given the equation x^2=-2x+8, the X intercepts are -4 and 2. The equation in the proper quadratic form can be either x^2+2x-8 =0 or -x^2-2x+8=0. in one case the parabola opens up, in the...