Quadratic Formula: round two decimal places 3x^2+11x-7=0

Find the required measurements of the following trapezoids. a = 8 cm b = 16 cm h = 10 cm

What is the sum of these mixed numbers 2 1/8 + 4 3/8

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.