a. n.y. b.o. d.y g. o.t a. n.y z. o.o. m c. o.d. e.s t. h.e. y w. a.n. n.a l. e.a. k, I w. a.n. n.a m. e.s. s w. i.t. h s. o.m. e p. e.o. p.l. e lol

Gabriel determined that his total cost would be represented by 2.5x + 2y – 2. his sister states that the expression should be x + x + 0.5x + y + y – 2. who is correct? explain.