The airplane is rising, so the change in elevation is +1,000 feet. the temperature is dropping, so the change in temperature is -20 degrees fahrenheit. write a numerical expression to represent the rate of temperature change in degrees fahrenheit per foot.

Aline has a slope of 1/4 and passes through point (0.4,-1/2). what is the value of the y-intercept?

Marla bought a book for $12.95, a binder for $3.49, and a backpack for $44.99. the sales tax rate is 6%. find the amount of tax and the total she paid for these items

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.