#4 Determine the number of possible positive and negative real zeros of the polynomial function f(x)=-3x+4x6 - 2x²+5x-4

Write the polynomial 67x3+2x in standard form. Then identify the degree and leading coefficient of the polynomial.

The polynomial 6x2+15xy gives the cost, in dollars, of producing a rectangular container whose top and bottom are squares with side x feet and sides of height y feet. Find the cost of producing a box with x=5 feet and y=8 feet.