2x^2+2xy+2x
The ^ means exponent
I might not be right but I think William's fastest speed is 7.5 km/h.
4.8 is the answer I’m pretty sure
Answer: x = -5, x = 6
<u>Step-by-step explanation:</u>
"Solutions" are also called roots, zeroes, and x-intercepts and are where the parabola crosses the x-axis.
The parabola crosses the x-axis at x = -5 and at x = 6
(see attachment)
There is approximately 1 solution for this equation