F(x)=3x^4-5x^3-x^2-8x+4

Possible numbers of positive, negative, and complex zeros

Is every rectangle is a parallelogram? true false

At the beginning of the day, stock xyz opened at $6.12. at the end of the day, it closed at $6.88. what is the rate of change of stock xyz? a. 1.17% b. 11.0% c. 12.4% d. 81.5%

What is the answer to this question? i'm a bit stumped. also how do i do it? 5(x - 4) = 2(x + 5)