Steve took a taxi from the airport to his hotel across town. The fare came to $19.30. Steve handed the driver a $20 bill
and told him to keep the change. Do you think Steve gave the
driver a generous tip, an adequate tip, or not enough tip to
express his appreciation for good service?

adequate

Step-by-step explanation:

In my personal opinion, this is not a good tip at all. Usually, you spend an extra 10% as a tip for a DECENT ride.

10% of $19.3 would be $1.93, but Steve only paid $0.7 in tips.

If the tax ride was a good one, then Steve better goes back to the taxi driver to give him/her another dollar or two.

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.

answer: a.   one is a factor of every whole number since every number is divisible by itself.