Iam working on a test review. how can i write -1 < = 2x+7 < 21 as two inequality statements? how do i join them with and/or? this is for algebra compound inequalities.

Keisha makes a large sandwich for a family picnic she takes 1/2 of them the sandwich to the picnic her family eats 3/8 of the whole sandwich what fraction of the whole sandwich does keisha bring back from the picnic

Find solution of the linear equation y = 2/3x + 1/3

Apack of gum would be considered a(n) necessity luxury item small ticket item unaccountable expense