you can do either or:) . pls explain the first one( it says write, where it is cut off) thank you:)

Solve the given system of equations. 2y= -x+9 , 3x-6= -15

(05.08a)triangle abc is transformed to similar triangle a′b′c′ below: a coordinate plane is shown. triangle abc has vertices a at 2 comma 6, b at 2 comma 4, and c at 4 comma 4. triangle a prime b prime c prime has vertices a prime at 1 comma 3, b prime at 1 comma 2, and c prime at 2 comma 2. what is the scale factor of dilation? 1 over 2 1 over 3 1 over 4 1 over 5

Tom drove 206 miles in 3.9 hours. estimate his average speed.