Which line is a linear model for the data?
a?
b?
c?
d?

Solution:

we are given with the graph representing the linear model for the data .

we have been asked to find which line is a linear model for the data.

As we know the data can be represented using the linear model if most of the data values fall on the line or along the line(side by side) represented by the data model. There might be some extreme points which will not fall on the line.

So if we closely observe the graph, we find that in option B that most of the data points are lying on the line or side by side. There are also some extreme values which are exceptional.

Hence the best suited option is B.

2. angles qrt and qst both measures 156 degrees.

step-by-step explanation:  

we have been given a diagram of a circle and we are told that measure of arc qvt is 156 degrees.  

we can see from our given diagram that angle qrt and angle qst subtends to arc qvt.

since we know that angles subtended by the same arc at the circumference are always equal.

by angle subtended by same arc theorem, measure of angle qrt and angle qst will be equal to the measure of arc qvt.

therefore, angles qrt and qst both measures 156 degrees and 2nd statement is the correct choice.