6. The variable, y, varies directly with x. If y= 20 when x = 21, what is y when x = 54? about 56.7

about 51.43

about 7.78

Simplify each expression for 18, 20, and 21

Acertain company's main source of income is a mobile app. the company's annual profit (in millions of dollars) as a function of the app's price (in dollars) is modeled by p(x)=-2(x-3)(x-11)p(x)=−2(x−3)(x−11 ) which app prices will result in \$0$0 annual profit? enter the lower price first.

What is the equation of the line written in general form? 0-x+y-2-2 ox+y-2=0 02x+4-2=0