increases by
At the start of summer, Juan had $21 saved in a bank account. Heworked during the summer to earn some extra
money. Each week, he saved the same amount of money from washing cars. He used theequation y=20x+21
to determine how much money was in his bank account, where x is the number of weeks and y is the total
money he has saved in his bank account. Determine the slope and y-intercept then interpret what the slope and
y-intercept of this situation means.