A grocery store sells steak for $6.10 per pound. What would be the cost of 2b of steak? A $34.03
CS15.86
D $12.06

4+6x-3x^3 in standard form with explanations because i don’t understand

Use the x-intercept method to find all real solutions of the equation. -9x^3-7x^2-96x+36=3x^3+x^2-3x+8

Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil