Using my answers from 11 and 12 does anyone think they can me figure out number i keep getting .729 and that just does not seem right because in number 12, 3 years is less money than that

Tod does not have any cookies. david gives jeff 8 cookies. then he splits half of the cookies he has left with tod. david let’s c represent the number of cookies that he starts with. he finds the number of cookies that tod has is 1/2 the difference of c and 8. write an expression to represent the number of cookies that tod has.

Bring the fraction a/a-4 to a denominator of 16-a^2

Answer asap! show all work! find the number of complex roots, the possible number of real roots and the possible rational roots of the polynomial function. then, solve for all roots. x^3 + 2x^2 + 3x + 6 = 0