Tìm x, y sao cho: B=-x^2+2xy-4y^2+2x+10y-8

Irene bought 3 yards of fabric and a spool of thread for $28.10. if the spool of thread cost $1.25, how much did the fabric cost per yard?

Choose the point slope form of the equation below that represents the like that passes through the points (-6,4) and (2, 0)

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