$1.50 what if you took of the sales tax rate of a helmet. if the sales rate was5%,how much would be the original price of the helmet?

International calls require the use of a country code. many country codes a 3-digit numbers. country codes do not begin with a 0 or 1. there are no restrictions on the second and third digits. how many different 3-digit country codes are possible?

Atemperature of 1.64◦f corresponds to answer in units of ◦c.

Aswimming pool had 2.5 million liters of water in it. some water evaporated, and then the pool only had 22 million liters of water in it. what percent of the water evaporated?