Suppose That F(T)is the Cost to Heat My House, in Dollars

Short Answer

Suppose that f(T)is the cost to heat my house, in dollars per day, when the outside temperature is T ${ } ^ { \circ } F$ .If f(28)= 11.10 and f '(28)= -0.12, approximately what is the cost to heat my house when the outside temperature is 25 ${ } ^ { \circ } F$ ?