Josh has 12 pencils. He gives some of them to his friends. Now he has 7 pencils left. How many pencils did Josh give to his friends?

Precalculus question, image attached.

Rose bought a new hat when she was on vacation. the following formula describes the percent sales tax rose paid b=t-c/c

(50 points) drag each description to the correct location on the table. each description can be used more than once. some systems of equations and their graphs are given in the table. for each system, place the description(s) in the box that correctly describe the type of system shown. :