Sun Lei bought a laptop computer for $1800.

The total cost, including tax, came to $1890.

What is the tax rate?

The initial population of a town is 3500, and it grows with a doubling time of 10 years. What will the population be in 12 years?

The sum of four times a number and negative three is twelve. What is the number? 2 1/4 3 3/4 -2 1/4 6

A certain shampoo is available in two sizes. A 23.7-ounce bottle costs $4.97. A 33.8 - ounce bottle costs $7.48. Find the unit price for each size. Then state which size is the better buy based on the unit price.

Order from least to greatest with decimals

A large cake from a bakery will serve 60 people. If there are 832 people expected at a reception, how many cakes are needed? Explain your reasoning.

If rounded to the nearest tenth 47.098

What is the algebric expression for Multiply x by 3 Add 6 Raise to the second power

Floor tiles are 12 inches by 12 how many tiles are needed to tile a floor that is 36 by 15 feet

Find the length of the longest line segment that can be drawn on a rectangular board 3.07 m by 2.24 m.

Male mosquitoes in the mood for mating find female mosquitoes of their own species by listening for the characteristic "buzzing" frequency of the female's wing beats. This frequency is about 620 wing beats per second.