0.643 rounded to the nearest hundred

Ax + 3 b equals to 2f solve for x

A town has a population of 19000 and grows at 4.5% every year. To the nearest tenth of a year, how long will it be until the population will reach 33700?

Which fraction is equivalent to - 3/7 3/-7 -3/-7 -7/3 7/3

If two coins are tossed togehter what is the probability of having at most one head

Cell Phone Company A charges $20 each month plus $0.03 per text. Cell Phone Company B charges $5 each month plus $0.07 per text. Write a system of equations to model the situation using c for cost and t for number of texts.

Sasha has nickels and one dollar bills in her pocket. The number of nickels is nine more than three times the number of one dollar bills. Let 0 represent the number of one dollar bills. Write an expression for the number of nickels.

How do you find mass volume and density?

A book has a list price of $39.99, but the bookstore receives a 40% discount from the publisher. How much does the bookstore have to pay per copy of this book?

What is 60% of 33 ... ?

A candle is 6 inches tall and burns at a rate of 1/2 inch per hour. How tall will if be in 6 hours?