Answer:
6 ft
Step-by-step explanation:
As we know that, the arch meet the ground are the value of x when y = 0
y=−0.9(x+3)(x−3)
<=> 0 = −0.9(x+3)(x−3)
<=> x=3 or x=-3
So we have 2 coordinates: (3, 0) and (-3,0) and the distance between them is:
3 -(-3) = 6
=> The width of the arch at ground level is 6 ft
If it is asking for x in terms of y, the answer is x = y+2
If ur equation looks like this, then the answer is -63/5 , and in decimal form the answer is -12.6 i hope this helps! !!
The would be A if I remember correctly