There are exactly 360° in a circle, so the angle measure would be 3/360 * 360 = 3°.
Well for the first one you have to subtract 3 on both sides so that would make the equation x > -8 (because a negative subtracting a positive is basically a negative plus negative) and so your equations done. For the second one you divide both ides by -4 so your equation would be x < 4 (the sign would be less then or qual to because you divided by a negative)
The zeroes (where the line crosses the x-axis, these are also the solutions) and the vertex (the highest or lowest point)
Well we know that the volume of a cylinder equals (area of base) (height)
225pi=a*9
divide both sides by 9
25pi=a
a=pir^2
25pi=pir^2
cancel out pi
25=r^2
5=r so the length of the radius is 5
A = v/t Multiply both sides by t
A(t) = v Divide both sides by A
t = v / A
