Which of the following equations shows how substitution can be used to solve the following system of equations? {=2+32+5=3
{y=2x+32x+5y=3

2x + 5y = 2x + 3

2(2x + 3) +5y = 3

2x + 5(2x + 3) = 3

y = 3

Mary works for a company that ships packages and must measure the size of each box that needs to be shipped. mary measures a box and finds the length is 7 inches, the width is 14 inches, and the height is 15 inches. what is the volume of the box? [type your answer as a number.]

Im literally having a mental breakdown

Can someone me with these two circle theorem questions asap?