Which sample size will produce the widest 95% confidence interval, given a sample proportion of 0.5? a. 80
b. 90
c. 70
d. 60

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.

5x−4≥12 or 12x+5≤−4 can you with this problem

See attachment below and find the equivalent of tan(∠qsr)