The graph of [tex]b^x[/tex] can be vertically stretch by multiplying b by a number greater than 1 So the function of [tex]f(x) = 2^x[/tex] can be vertically stretched by multiplying a number that is greater than one. To vertically stretch the function, we can multiply by 5 like the following: [tex]f(x) = 5 \times 2^x[/tex] , which B is your answer.
