Question: Show that the equation $x^{3}2x2=sinx$ has one and eactly one solution. Identify the theorem you are using. Show your work. $(10$ pts$)$

Question $10$: How many inflection points does the curve $y=4x^5-5x^4-12$ have? Show your work. $(10$ pts$)$

a$)0$

b$)1$

c$)2$

d$)3$

e$)4$