I need help again I used to love math but I’m not good at it no more

Even if you're not that good, you can still love it!

Well x stands for the money she had in her pocket when she first started.

38.45 is the price of a new shirt.

17.71 is what's left in her pocket after spending the price on the shirt.

So that means you have to subtract 38.45 from "x" to get 17.71:

x - 38.45 = 17.71

last option

step-by-step explanation:

given that δdef is right and isoceles,

assuming that side df is the hypotenuse means that de an ef are the other 2 sides that intersect at 90° and are of equal length.

because they are of equal length, we can say that they are congruent

because they intersect at 90°, their slopes must be opposite reciprocals.

only the last option satisfies these conditions.