1. Scientific Notation &Percent. (Obj.1 & 4.Textbook pg. 22 & 23 and % = with pg. 99)Two percent of Jennie’s skin cells were burned when she escaped from a fire. If 3.7 × 1010 of her skin cells were burned then, how many skin cells were not burned

Anyone know? will mark brainliest if correct

Dean and karlene get paid to write songs. dean is paid a one-time fee of $20 plus $80 per day. karlene is paid a one-time fee of $25 plus $100 per day. write an expression to represent how much a producer will pay to hire both to work the same number of days on a song.

Line u passes through points (-52, -18) and (-29, 53). line v passes through points (90, 33) and (19, 56). are line u and line v parallel or perpendicular?