3.6.7
If x varies directly as y, and x = 48 when y = 6, find x when y = 7.

Clara schumann is buying bagels for her coworkers, she buys a dozen bagels priced at $5.49 a dozen. the bakery's cost for making the bagels is $2.25 per dozen. what is the markup rate based on selling price on a dozen bagels?

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

Bobs burgers bam has a special deal of 4 hamburgers for $6. at that rate, how much should it cost to buy 3 hamburgers?