Stereo has a list price of $150 but is on sale for 20% off the list price what is the sale price of the a. 120 b.130 c.147 d.180

Afarm that has 4 x 10^2 acres has 1.2 x 10^5 cattle. what is the average number of cattle per acre? write the answer in scientific notation. answere asap

What is the solution to this system of equations? y= 2x - 3.5 x - 2y = -14

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