Find the numerical value of the rational expression for given value of r. 8r+5
5r2+3r-2
r = -1

The amount of energy it takes to lift a box might be a function of which of the following

Pick the expression that matches this description: a polynomial of the 5th degree with a leading coefficient of 7 and a constant term of 6 (choice a) 7x^5+2x^2+6 (choice b) 7x^6−6x^4+5 (choice c) 6x^7−x^5+5 (choice d) 6x^5+x^4+7

Plzzz i beg u so much asap ! what is the slope of this line? enter your answer in the box.