Plss answer asap! Write two expressions (with at least two terms each) that when added together have a sum of -4 n + 6.

Justin has 750 more than eva and eva has 12 less than justin together they have a total of 63 how much money did

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

The volume of a spherical hot air balloon v(r) = 4 3 ? r3 changes as its radius changes. the radius is a function of time given by r(t) = 3t. find the instantaneous rate of change of the volume with respect to t at t = 2.