A matrix equation is shown below. [a c ] [e g] [1 0]

[b d] [f h] = [0 1]

Which statement must be true?

A
ab−cd≠0ab−cd≠0

B
ad−bc=0ad−bc=0

C
ad−bc≠0ad−bc≠0

D
ab−cd=0

Write a polynomial function f of least degree that has rational coefficients, a leading coefficient of 1, and the given zeros. 3, 4+2i, 1+(sqrt)7 the answer is supposed to be: f(x)=x(^5)-13x(^4)+60x(^3)-82x(^2)-144x+360 what am i doing wrong?

Another type of subtraction equation is 16-b=7. explain how you would sole this equation then solve it.

Ms.ortiz sells tomatoes wholesale. the function p(x)=-80x^2+320x-10, graphed below, indicates how much profit she makes on a load of tomatoes if she makes on a load of tomatoes if she sells them for 4-x dollars per kilogram. what should ms.ortiz charge per kilogram of tomatoes to make on a load of tomatoes?