Consider the discrete probability distribution in the following table
X 4 5 6 7
P(X) .4 .1 .2 .3
Find P(X=4), P(X<4), and P(X=4 or X=5).

Can someone me with my hwplz(only the circled ones)

Which questions would most a reader identify the author's purpose for writing? check all that apply. what type of text is this? what type of reviews did the book receive? how many copies of the book have been sold? what is the central idea? how does this text make one feel?

Gabriel determined that his total cost would be represented by 2.5x + 2y – 2. his sister states that the expression should be x + x + 0.5x + y + y – 2. who is correct? explain.