What is the solution set for the given inequality if the replacement set for r is {5,6,7,8,9,10}? 16 - r > 8. a){8,9,10} b){5,6,7} c){9,10} d) {5,6}

4+6x-3x^3 in standard form with explanations because i don’t understand

Fanny mendelssohn manages all the magazines and paperback books at a local grocery store. she prices many paperbacks to sell at $7.99. the cost to the store is $5.29. what is the markup rate on a paperback book, based on its cost?

Parabolas y=−2x^2 and y=2x^2 +k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.