Our parent function is f(x)=x^2. A vertical stretch by a factor of k means that every point (x,f(x)), has been transformed into (x,kf(x)). Alex is clearly incorrect as our parent function has been transformed to (x,9f(x)), not (x,3f(x)). A horizontal stretch(or compression) by a factor of k means our function has been transformed to (x/k,f(x)). Here, Marta is saying our function should look like (3x,f(x)). This can also be achieved by plugging 3x into the parent function, which would give us f(3x)=(3x)^2, so it seems that Marta is the correct one.
0.78
hope this helps, good luck! :)
4000
as the first bit rounds to 5 and the second bit rounds to 800
Answer:
715
Step-by-step explanation:
52/80 × 1100=715 students eat cereal for breakfast
The phase shift is 7.2 right
