{need answer asap will mark braniest}
which function has 10 and -1 as roots?

a.
f(x) = x2 - 9x - 10

b.
f(x) = x2 - 9x + 10

c.
f(x) = x2 + 9x - 10

d.
f(x) = x2 + 9x + 10

Kayla made observations about the sellin price of a new brand of coffee that sold in the three different sized bags she recorded those observations in the following table 6 is $2.10 8 is $2.80 and 16 is to $5.60 use the relationship to predict the cost of a 20oz bag of coffee.