Charlotte and Edgar's ages add up to 22. Charlotte is one year older than twice Edgar's age.
How old are Charlotte and Edgar? Show all of your work and/or
reasoning.

Solve the following inequalities and show the solution on a number line. 3/4 (2x-7) ≤ 5

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.

Sam is a waiter at a local restaurant where he earns wages of $5 per hour sam figures that he also eams about $3 in tips for each person he serves sam works 6 hours on a particular day. if n represents the number of people sam serves that day, which of the following functions could sam use to figure ehis total earings for the do o a. en) = 30 o b. en) = 5n+ 18