A cereal company finds that the number of people who will buy one of its products in the first month that it is introduced is linearly related to the amount of money it spends on advertising. If it spends ​$30,000 on​ advertising, then​ 100,000 boxes of cereal will be​ sold, and if it spends ​$100,000 on​ advertising, then​ 200,000 boxes of cereal will be sold. (a)
Write an equation that relates the amount A spent on advertising to the number x of boxes the company aims to sell.
(b)
How much advertising is needed to sell 500,000 boxes of​ cereal?
(c)
Interpret the slope.

Use the distributive law to multiply. 3(4x + 5y + 6)

Apsychology student wishes to investigate differences in political opinions between business majors and political science majors at her college. she randomly selects 100 students from the 260 business majors and 100 students from the 180 political science majors. does this sampling plan result in a simple random sample? why or why not? no, because each group of 200 students in the sample does not have the same chance of being selected. yes, because each group of 200 students in the sample has the same chance of being selected. no, because each individual student does not have an equal chance of being selected. yes, because each individual student has the same chance of being selected.

If the scale factor between two circles is 2x/5y what is the ratio of their areas?