A teacher weighed the backpacks of 4 students. Here are the weights (in kilograms): 5, 7, 9, 11 The mean is x =8
Which of these formulas gives the standard deviation?

Do u just plot the numbers on the graph like (1,

F(x) = 1/x g(x)=x-4 can you evaluate (g*f)(0) ? why or why not?

Amir wants to proportionally increase the size of a photo to create a poster for his room. the size of the original photo is shown. complete the statement and then answer the question to represent ways that amir can increase the size of his photo.