Can somebody help please

Leo is going to use a random number generator 4 0 0 400 times. each time he uses it, he will get a 1 , 2 , 3 , 4 , 1,2,3,4, or 5 5. what is the best prediction for the number of times that leo will get an odd number?

Which is the graph of the function y=2(4)^x

Use the elimination method to solve the systems of equations.choose the correct ordered pair. 7x+4y=39