Which expression is the factorization of the following trinomial? x ^2+ 10x + 21
O (x + 3)(x + 7)
O (x + 4) (x + 6)
O (x + 6)(x + 15)
O (
(x + 7)(x + 14)

Jalen charges $25.50 for every 3 hours of yard work he does for his neighbors. ralph charges $34 for every 4 hours of work that he does. who charges less? opinions: 1.they charge the same amount 2.jalen 3.ralph