Pls I need help ASAP

What is 2.5 - 1.4

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

Quickly multiply and simplify polynomials (x – 4) (x^2 – 5x – 6)

What is the base of the exponential expression of 4 to the power of 5