April surveyed 200 bicyclists riding on the Two Rivers Bridge and recorded the helmet color and brand of bicycle (name-brand or generic) the cyclist was riding
Of the 80 cyclists riding name-brand bikes, 60 had black helmets. If helmet
color and brand of bicycle are independent, how many cyclists riding generic
bicycles would be expected to have black helmets?
A. 5
B. 20
C. 30
D. 90
E. 100

What basic trigonometric identity would you use to verify that csc x sec x cot x = csc^(2)x

Find all the values of x that make 0.1x + 0.25(102 - x) < 17.10 true.

Paula makes stained-glass windows and sells them to boutique stores. if her costs total $12,000 per year plus $4 per window for the frame. how many windows must she produce to earn a profit of at least $48,000 in one year if she sells the windows for $28 each? 1. define a variable for the situation. 2. write an inequality that represents her profit. note: revenue is money coming in. cost is money going out. profit is the difference between the revenue and the cost. in other words: revenue - costs profit 3.using words, describe how many windows she must sell to have a profit of at least $48,000.