Using the information below, write a variable expression for the following: Brian is x years old.
Brandon is twice as old as Brian.
Billy is 2 years older than Brandon.

You are on a cycling trip around europe with friends. you check the weather forecast for the first week. these are the temperatures for the week. sun mon tues wed thurs fri sat 16°c 20°c 24°c 28°c 28°c 23°c 15°c what is the mean temperature forecast for the week?

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?

Ahiker stands at an unknown elevation before he ascends 2 miles up a mountain to an elevation of 9 miles. find the elevation of the hiker before his ascent.