NEED QUICK ANSWER! please :(

Which function BEST expresses the linear relationship displayed by the scatter plot?

A) y = 2.2x + 8.8
B) y = 0.45x + 8.8
C) y = 2.2x + 19.2
D) y = 0.45x + 24.8

Abouncy ball is dropped such that the height of its first bounce is 5.5 feet and each successive bounce is 64% of the previous bounce's height. what would be the height of the 7th bounce of the ball? round to the nearest tenth (if necessary).

What is the equation of the graph below? y=sec(x)-4

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.