Which equation is correct regarding the measure of ∠1?

The size of a certain cell is 2.5*10^-9m. another cell is 1.5*10^3 times larger. how large is the larger cell in scientific notation?

Suppose g(x) = f(x + 3) + 4. which statement best compares the graph of g(x) with the graph of f(x)?

If g^-1(x) is the inverse of g (x) which statement must be true