Suppose f and g are continuous functions such that
g(9) = 3
and
lim
x → 9
[3f(x) + f(x)g(x)] = 12.
find
f(9).

Apublic library wants to place 4 magazines and 9 books on each display shelf. the expression 4s+9s represents the total number of items that will be displayed on s shelves. simplify the expression

Nine more than four times a number is the same as one less than twice the number. find the number?

Sketch one cycle if the cosine function y=2cos2theta