Elena and Jada are 18 miles apart on a path when they start moving towards each other. Elena runs at a constant speed of 3 miles per hour, and Jada walks at a constant speed of 6 miles per hour. How long does it take until Elena and Jada meet?

Solve the system. -a+4b+2c=-8 3a+b-4c=9 b=-1 a.(0,11) ,-1,2) c.(1,1,-2) d.(2,-1,-1)

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

Acompany that manufactures and sells guitars made changes in their product range. from the start they had 20 models. then they reduced the number of models to 15. as a result, the company enjoyed a 10% increase in turnover. - how much did the stock level change? in (%)