althea volunteers in the school library for 2 1/4 hours on mondays, wednesdays, and fridays. on tuesdays and thursdays, she volunteers for 1 3/4 hour. althea thinks she volunteers more than 10 hours a week. how many hours does she volunteer? Please help asap

Suppose the radius of a circle is 16. what issuppose the radius of a circle is 16. what is its circumference its circumference

What is the radius of a circle with an area of 78.5 cubic inches? use 3.14 for pie

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.