What is 7 1/2 scaled up by a factor of 10?

Which of the following properties can be used to show

With alll of except for the 2 that i did already

Nellie is analyzing a quadratic function f(x) and a linear function g(x). will they intersect? f(x) g(x) graph of the function f of x equals one half times x squared, plus 2 x g(x) 1 5 2 10 3 15