2. which of these is the point-slope form of the line through points (3,-1) and (4,9)?
1. y - 4 = 10(x -9)
2. y + 1 = 10(x - 3)
3. y - 3 = 10(x + 1)
4. y + 1 = 10(* - 4)
3. which of these is the point-slope form of the line through point (4,-2), with a slope of 7?
1. y - 4 = 7(x + 2)
2. y + 4 = 7(x - 2)
3. y + 2 = 7(x-4)
4. y - 2 = 7(x + 4)

8. kelly wants to buy a magazine that is $25. later the magazine was marked up an additional 20%. what is the new price?

For g(x) = 5x - 3 and h(x) = [tex]\sqrt{x}[/tex], find (g · h)(4)

Q.1 dr. frank needs to choose 3 students from her advanced biology course to attend a conference in hawaii. the course has 40 students. which of the following methods could dr. frank use to choose a simple, random sample of 3 students? select all that apply. 1 dr. frank could have the students line up from shortest to tallest, then use her birthdate, 2/5/39, to select 3 students from the line (the 2nd student, the 5th student, and the 39th student). 2. dr. frank could upload her class roster into a spreadsheet and use a ranom-number generating function to produce 3 random numbers. the students whose names are located in the rows with these 3 numbers on the spreadsheet would be chosen. 3. dr. frank could choose the students with the 3 highest grades in the class. 4. dr. frank could count to three, then the first students to come to the front of the classroom and grab a golden ticket from her hand would be selected. 5. dr. frank could ask all students to write their name on a card, place all of the cards in a hat, shake the hat, and then pull 3 cards out from the hat. the students whose names appear on those 3 cards will be selected. 6. dr. frank could ask for volunteers to go to the conference, then choose the first 3 students who raise their hands. q2. now, choose one of the methods that you did not select and explain why this method would not result in a simple, random sample: