Can someone help me pleasee ??

Which representation has a constant of variation of -2.5

Lola says these two expressions have the same value. expression a expression b which explains whether lola is correct?

An account with a $250 balance accrues 2% annually. if no deposits or withdrawals are made, which graph can be used to determine approximately how many years will it take for the balance to be $282? it's e2020 ni️️as