X^4+3x^3+4x^2+12=0
In need of help how do I solve this?

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value

45.36 feet per second

step-by-step explanation:

tyrone travels 30 miles in 58.2 minutes.  

1 mile = 5280 feet; this means he travels

30(5280) = 158400 feet in 58.2 minutes.

1 minute = 60 seconds; this means he travels 158400 feet in

58.2(60) = 3492 seconds.

this gives us the unit rate of

158400/3492 = 45.36 feet per second.

it will take 9 minutes