In order to provide valid data, every survey should be: A-Representative, unbiased, as many people as possible.
B-Representative, biased, as many as people as possible.
C-Convenient, unbiased, as many people as possible.
D-Convenient, biased, as many people as possible.

the graph on the bottom right

9.55 degrees.

step-by-step explanation:

the given angle is

1 cycle is equal to 2π radians. so 4π will be equal to two cycles.

5.166667π-4π = 1.166667π

hence, this angle goes a little more than negative x axis.

1.166667π-π= 0.166667π

hence, the reference angle is 0.166667π radians.

1 radian = 57.2958 degrees

now, in degrees, this should be equals to 9.55 degrees.

step-by-step explanation:

the first 5 right here the next 5 i will upload as separate question

the final price would be 29.6925

step-by-step explanation:

39.59 minus 25% equals 29.6925