The first one because there is only one y value for every x value. you can also use the vertical line test in which you draw vertical lines and make sure the function only passes through it once at each point
3 hats each is the largest amount Brian can buy
To get this answer I multiplied 3 friends by $5 amount of each hat and got $15 then I divided that into 57$ and got 3.8. So he can only afford to get each friend 3 hats each Brian should have $12 left
First you can write it as 1.25 which it is the decimal version of the percent. Then write the 1.25x = 25. After divide both sides by 1.25. Ta da, You have your answer (which is 20).
It's an exponential so we rule out the first one.
It increases with increasing x, so the base must be bigger than one; rule out the second choice.
It looks like (1,10) and (2,100) are on the graph, so that's the third choice,

Answer:
non of the above.
Step-by-step explanation:
It's not a regular shape-