Simplify the following: 1) 7x + 5 – 3x
2) 6w2 + 11w + 8w2 – 15w
3) 6x + 4 + 15 – 7x
4) 12x – 5 + 7x – 11
5) 2x2 - 3x + 7 – 3x2 + 4x – 7
6) 11a2b – 12ab2

Find the equation of the trend line (line of best fit). show your work i'm using the points (34,76) (42,91)

The median of a data set is the measure of center that is found by adding the data values and dividing the total by the number of data values that is the value that occurs with the greatest frequency that is the value midway between the maximum and minimum values in the original data set that is the middle value when the original data values are arranged in order of increasing (or decreasing) magnitude

Tod does not have any cookies. david gives jeff 8 cookies. then he splits half of the cookies he has left with tod. david let’s c represent the number of cookies that he starts with. he finds the number of cookies that tod has is 1/2 the difference of c and 8. write an expression to represent the number of cookies that tod has.