1.
In this case we have an initial value of 60 and it increases by 200 each year, so the best equation to represent this case is:
[tex]y=60+200x[/tex]2.
The original price is 55, and now the price is 4 times the initial price, so the best equation is:
[tex]y=55(4^x)[/tex]3.
The initial amount is 200, and it's multiplied by 0.5 (that is, half) each year, so the equation is:
[tex]y=200(\frac{1}{2})^x[/tex]4.
The initial cost is $50 and $5 more is added per line, so the best equation is:
[tex]y=50+5x[/tex]5.
The initial amount is $10 and it doubles (it's multiplied by 2) each year, so the equation is:
[tex]y=10(2^x)[/tex]