In the matrix equation below, what are the values of x and y?
x
ox=-1, y = 2
o x= 3, y = 8
o x = 5, y = -4
x = 5, y = 2
x
x

When drawing a trend line for a series of data on a scatter plot, which of the following is true? a. there should be an equal number of data points on either side of the trend line. b. all the data points should lie on one side of the trend line. c. the trend line should not intersect any data point on the plot. d. the trend line must connect each data point on the plot.

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?

Liz had 140 pens and inna had 100 pens. after inna gave liz some pens, liz had 3 times as many pens as inna. how many pens did inna give liz?