Ralph sold brownies for $0.27 a piece in order to earn money to buy baseball cards. if the cards cost $0.54 per pack, and if ralph had no money left over after buying them, what is the least number of brownies he must have sold?

Farnesene is a sesquiterpene. how many different isomers arising from double-bond isomerizations are possible? g

Cassie is traveling 675 miles today to visit her brother and his family. so far, she has stopped for gas three times. at the first stop, she put in 7.1 gallons of gas and paid $23.79. at her second stop, she put in 5.8 gallons of gas and paid $19.08. and, at the third stop, 6.6 gallons and paid $20.39. at which stop did casey pay the most for gas?

In need of in the diagram, ∠abc is a right angle. ∠dbc = 30°27'40". find the measure of ∠abd.