PLEASE HELP ME A researcher posts a newspaper advertisement offering $10 in exchange for participation in a short study. The researcher accepts the first 10 people who respond to the advertisement. Which of the following statements is true about the sample? ) Select one: a. It is not a valid sample because it is only a short study.
b. It is a valid sample because money is offered to participants.
c. It is a valid sample because the first 10 people were selected to participate.
d. It is not a valid sample because it is not a random sample of the population.

Y=(x+3)(x-4)(x+1)^2 sulutions? multiplicity?

What is the area of the shaded sector?

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.