James has saved $24.60. Dillon saved 2/3 of
the amount that James saved. Mara saved 2
times as much as Dillon. What is the total
saved amount of all three?

James saved 24.60 dollars, and we know Dillon saved 2/3 of the amount James saved.

Dillon's amount: 2/3 * 24.60 = 16.40

So we have two amounts:

James = 24.60 dollars

Dillon = 16.40

Mara = 16.40 * 2 = 32.80 dollars.

The question is asking for the total, so we add them together:

24.60 + 16.40 + 32.80 = 73.8 dollars.

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c