Answer: D. 10 students finished the test. How I got that: 20 x 4. Which got me 80. (You had to get after 70) 9.5 students finished but round that up to 10.
The answer is g'(x)=<span>4x^3-10x=0 so </span><span>(4x-10)x=0 it is x= 0 and x= 5/2 </span> <span>g(0)=4 </span> <span>g(5/2)=x^4-5x^2+4=11.81</span> the minimum is M(0, 4)
