The sum of the numbers is 130 the 3rd number is 4 times the second the second number is 10 less than the first

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?

In which direction does the left side of the graph of this function point? f(x) = 3x3 - x2 + 4x - 2

Which shows the first equation written in slope-intercept form? 1/2 (2y + 10) = 7x