Silvio has $50 saved and needs to spend $5 a day for lunch. Let x represent the number of hours.
Let y represent the $.
Write an equation for this situation:

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.

you can't solve x because it is 2 linear equation and you only have one equation

step-by-step explanation:

the answer is 128

answer: translate the circles so they share a common center point and dilate circle y by a scale factor of 3.