Answer:
c=4
Step-by-step explanation:
5x^2 + 9x = -4
We need to write this in the form
ax^2 +bx+c = 0
So add 4 to each side
5x^2 + 9x+4 = -4+4
5x^2 + 9x+4 = 0
a =5 b=9 and c =4
D
grade=15%
For 2 ft on x-axis it has elevated 0.3 ft on y-axis
m=0.3/2=0.15 ft
grade=m x 100
Answer is B...........
