contestada

please answer 7 & 10 for me and how to do i really need help which is ironic since i learned this last year i was in 6 th grade now im in 7th and learning it again but guss i forgot

please answer 7 amp 10 for me and how to do i really need help which is ironic since i learned this last year i was in 6 th grade now im in 7th and learning it class=