F(x) = x^2 - 3x - 8
f(-2) = (-2)^2 - 3 (-2) - 8
f(-2) = 4 - 3 (-2) - 8
f(-2) = 4 + 6 - 8
f(-2) = 10 - 8
f(-2) = 2 ✅
X>5
Since 2x>11-1 is 2x>10 divide by 2
And we get x>5
It moves roughly 5 inches a day. (p.s you made a mistake, there is 365 days in a year not 356)