Which of the following equations represents a parabola that opens down and has a vertex at (3, -1)? answer choices. a. y= -2(x-3)^2+1 b. y= 2(x-3)^2-1 c. y= -2(x+3)^2-1 d. y= -2(x-3)^2-1

Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.

You are shooting hoops after school and make 152 out of a total of 200. what percent of shots did you make? what percent did you miss? show proportion(s).

Timmy uses 1 1 2 cups of sugar for every 2 gallons of lemonade he makes. how many cups of sugar would timmy use if he makes 13 gallons of lemonade?