10 pounds of flour cost $8. How much does 40 pounds of flour cost? What is the cost per pound of flour? 490000000000000

c. bounced back and forth from worthless to worth a lot and back to worthless

answer

explanation

the given equation is

we can rewrite this as:

let

then the equation becomes:

the factors of 8 that sum up to -9 are {-1,-8}

we split the middle term with these factors to obtain,

we factor by grouping to obtain:

apply the zero product property to get:

but