Principal Allen took out a car loan to buy his Doge Charger R/T for $27,762. He made 3 consecutive payments of $432.71, $423.88, and $512.00. If three payments he made went straight to the principal balance, how much money is left on the car if he still has to pay $521.55 in interest.

x:       y:  

-1         4

0         4

1         6

2         18

3         20  

the diagram shows you   triangle def with de=4, df=9 and de≠df≠ef.

the sum of the lengths of two triangles' sides are always greater than the length of the third side:

substitute sides lengths:

then 5< ef< 13 (option 3 is true).

def is a scalene triangle with all sides of different lengths (option 5 is true, option 2 is false).

answer: correct choices are 1, 3 and 5