Water flows from a kitchen faucet with a proportional relationship between the amount of time (in minutes) and the number of gallons.
If a total of 0.5 gallon of water flows out of the tap after 0.2 minute, what is the
constant of proportionality?

the circle graph is not a function.

step-by-step explanation:

the graph of the circle is not a function.

because for a graph to be a function, each value of x must give one value of y

in the circle, the values of x for -2< x< 2 each give 2 values of y.

hence this is not a function.

add all the numbers and check the ones place.

the answer is 486. as the ones place is more than 4, the estimation will be the next 10 ie, 490