The differential equation dy/dx=2x(4-y)
i. produces a slope field with horizontal tangents at y = 4
ii. produces a slope field with horizontal tangents at x = 0
iii. produces a slope field with vertical tangents at x = 0 and y = 4
which is true?
i only
ii only
i and ii
iii only

This is different from the first one can someone me

Evaluate the expression for the given value of the variable. | ? 4 b ? 8 | + ? ? ? 1 ? b 2 ? ? + 2 b 3 -4b-8+-1-b2+2b3 ; b = ? 2 b=-2

The mean finish time was 185.52 with a standard deviation of 0.327 minute. the winning car driven by chris finished in 185.13. the previous year race had a mean finish time of 110.3 with a standard deviation of 0.106. the winning car that year driven by karen finished in 110.13 minutes. find their respective z-scores. chris - z-score karen “- z-score