- How do i solve this? and is Dy, the same as Dx ? Dy[ (x^3 +1)/(x^2 +1) ]?

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Find the x and y-intercepts of f(x)=5^(8x)−2? 12 kg ball fired from cannon muzzle speed of 439m/s angle of 51.9° with the horizontal.
Gravity 9.8m/s
What s the max height reached? Is it true a small crystal of copper sulfate added to a super saturated solution will dissolve very slowly? How do I find the compass heading/bearing? What is the name of this excercise machine?
Or A Video would be helpful on how to use it..
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