Dintr-o clasă cu 20 de elevi, particpă la concursul de șah 16 elevi, iar la concursul de caricaturi 12 elevi. Aflați câți elevi partcipă la ambele concursuri.

Definition population of a town is 4,300, and it grows with a doubling time of 10 years. What will the population be in 8 years?

What is 12 minus 1/2 plus 2/3?

Mr. and Mrs. Smith retired on 80 percent of their pre-retirement earnings. If they are living on $35,000 per year, what was their pre-retirement income?

Samuel moved from a city to a small town. The population of the city is 7.2 * 105, which is about 18 times as great as the small town. Which expression could represent the approximate population of the small town?

An owner of a company spends $25 on office supplies. The owner is left with $20. Write an equation to find how much money he originally had.

The length of a classroom is 34 feet. What is the measurement in yards and feet?

What is the length of the second base of a trapezoid if the length of one base is 24 and the length of the mid segment is 19

14 is a gcf of M AND 210. what are the possible values of m

The busty bee book club charges an annual membership fee of $10 and $4 per book you order. what will be your total cost of being in this club when you order 9 books? write an function rule for the total cost C (n) when you order n books.

Find the zeros of the quadratic function. Solve by factoring. x^2+14x=-45