What is the correct answer I will give brainlist if it’s correct answer ASAP like put box 1 answer in that one and then the box 2 answer in that box but please help me

Charlie is a car salesman he earns $800 plus a 9% commission on all of her sales for the week if charlie receive the payment for $1960 this week how much where is total sales

Simplify. −4x^2 (5x^4−3x^2+x−2) −20x^6−12x^4+8x^3−8x^2 −20x^6+12x^4−4x^3+8x^2 −20x^8+12x^4−4x^2+8x −20x^6+12x^4+4x^3−8x^2

0if x and y vary inversely and y=6 as x=7, what is the constant of variation?