Which of the following could be used to calculate the area of the sector in the circle shown above? (6 points) Select one:
a. π(15in) 40 over 360
b. π(40in)215 over 360
c. π(15in)240 over 360
d. π(40in) 15 over 360

r=15, interior angle is 40

The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?

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.

Round to the nearest ten thousandth.i dont get this