Find the next three terms of the sequence 80, –160, 320, –640

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

Acompany made a profit of 75000 over a period of 6 years on an initial investment of 15000 what is the annual roi

Find the volume of the solid bounded by the plane z=0 and the paraboloid z=1-x^2 –y^2