Slope: 3, y-intercept: 4, equation: y = 3x + 4
because 4x+20y=-36,so ( 4x+20y)/2=2x+10y=-18
(2x+10y)-(2x+5y)=-18-18
5y=-36
then y=-7.2
because 2x=18-5y
so x=(18-5y)/2=(18-5*(-7.2))/2=27
The answer is 18.975 but you might want to round that to 18.98
Step-by-step explanation:
(f○g)(7)
= f(g(7))
g(7) = 7 + 2
= 9
f(9) = 4(9) .....
......