Which expression is equwatem to (31 -91652-1 + 19)? a. 150 - 450? +15+2 +57t-171

b. 15+ - Sot - 1562 577 * 171

C. 15t" - 50t? - 15t2 * 571 - 171

a. 15t" - 50t? +15t? * 571 - 171

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?

[10 points, algebra 2-simplifying complex fractions]according to my answer key the restrictions are -1 and 4. but why not positive 1?

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?