Question

John is going to start saving $20 every month to buy a new IPod. His parents gave him $10 for his birthday to open his savings account. The equation y = 20x + 10 represents John’s savings account balance x months after be began saving.
a) How many months will it take John to save enough money for the $300 IPod? Explain.


b) If John saved $40 per month instead of $20, how would you expect the slope of the graph to change? Explain.

Answer 1

Answer:

A) It will take john 15 months to save./////B)The slope of the graph would be steeper.

Step-by-step explanation:

A) It will take him 15 months because 300/20 is 15 and if he earns 20$ every month you multiply 15 by 20 and get 300$.So he will earn 300$ for the new Ipod in 15 months.

B)The slope would be steeper because he is earning more money in less of a time.In this case he would earn 300$ in 7 1/2 months.