Consider the equation 40x - 25y = 15

david wrote a second equation to create a system that has infinitely many solutions. which of these could be the equation that david wrote?

a) 8x - 5y = 3
b) 8x + 5y = 3
c) 8x + 5y = -3
d) -8x + 5y = -3

A) 8x - 5y = 3

Step-by-step explanation:

To create infinite solutions, the equation has to be the same line

First we can reduce the equation by dividing by 5

40x -25y =15

40/5 x -25/5 y =15/5

8x-5y =3

This is the same line , so if this is the second equation, it will give us infinite solutions

add all the numbers and check the ones place.

the answer is 486. as the ones place is more than 4, the estimation will be the next 10 ie, 490