F(x)=8x^4-3x^2+4x-1=0 ; 0 less than or equal to r less than or equal to 1

Step-by-step explanation:

the dimensions are:

step-by-step explanation:

we want to find the dimensions of a rectangular box with volume of

we factor to obtain;

we rewrite the rightmost factor to obtain;

recall that:

we apply difference of two squares formula to obtain;

hence the dimensions are

i think the amount would be $140.62