-5 + ? = -7 1/3
PLS HELP M

An equation of the line tangent to y=x^3+3x^2+2 at its point of inflection is

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?

Convert the mixed numbers into improper fractions. convert the improper fraction to mixed numbers.