F(x) = 4x identify the zeros of the function algebraically

Erin bought christmas cards for $2 each to send to her family and friends. which variable is the dependent variable?

Lola says these two expressions have the same value. expression a expression b which explains whether lola is correct?

If you are dealt 4 cards from a shuffled deck of 52? cards, find the probability that all 4 cards are diamondsdiamonds.