Can someone do the one thats circled thanks :D

(08.01)consider the following pair of equations: x + y = −2 y = 2x + 10 if the two equations are graphed, at what point do the lines representing the two equations intersect? (−4, 2) (4, 2) (−2, 4) (2, 4)

Daniel bought a computer game for $25 and later sold it to thomas for a 40% profit. how much did daniel sell the computer game for?

Ab and bc form a right angle at point b. if a= (-3,-1) and b= (4,4) what is the equation of bc?