Answer :The first one
Step-by-step explanation:
Answer: 2.5 hours
explanation:
7.5/3=2.5
The solution for x is D=-4
I remember CUP -- concave up positive. Here we have a leading coefficient that's negative, so the cup is upside down, the parabola opens down, an arch not a bowl.
To find the total distance, Divide distance already walked by percentage:
8 / 0.55 = 14.55 km
She already walked 8 so now subtract:
14.55 - 8 = 6.55 km left to walk
