In which step did Samuel make an error?
In step 1, he substituted the x values for y and the y values for x.
In step 2, he made an arithmetic error.
In step 3, he substituted the wrong values for m and b.
Samuel did not make an error.

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?

Julie was able to walk 16 km through the zoo in 6 hours. how long will it take her to walk 24 km through the zoo?

In the diagram below,abc is congruent to dec what is the value of x