Tony decided to start a nickel collection. Every week for 9 weeks he added 20 nickels to his collection. If a nickel weighs 5 grams how much did Tony's collection weigh in kilograms at the end of the 9 weeks?

Enter the number of complex zeros for the polynomial function f(x) = x 4+ 5x² +6

Don't know how to find x given these segment lengths

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.