Answer:
x-intercept(s):
(−14/9,0)
y-intercept(s):
(0,−14)
3a+9=54
3a+9-9=54-9
3a= 45
a=15
Check answer:
3(15)+9=54
54=54
Answer is a=15
Please take a photo of this problem... it looks very hard when it is written in the way you did.