Simplify
4(2x + 1) − (−6x)

Which statement about perfect cubes is true

If you could answer these your a life saver

Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water: one with 40% and the other with 70% of salt in them. how much of each must she use to make the solution she needs? i am in need of