Plz help Solve the system by Substitution

y=2x+15

7x+2y=−14

A(-6, 3)

B(4, -7)

C(6, -7)

D(-4, 7)

With: label the vertices and all the elements needed. find x

Kayla and alberto are selling fruit for a school fundraiser. customers can buy small boxes of grapefruit and large boxes of grapefruit. kayla sold 3 small boxes of grapefruit and 1 large box of grapefruit for a total of $65. alberto sold 1 small box of grapefruit and 1 large box of grapefruit for a total of $55. what is the cost each of one small box of grapefruit and one large box of grapefruit?

How many grams the dog will eat in 3 days?