What is the area in aquarium feet of the rectangle shown below

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup

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

F(x)=5/6x+3 which of the following is true