13x + 6y = -30
x - 2y= -4

which ordered pair is the best estimate for the solution to the system?
a. (-2.5, 0.25)
b. (-1.25, 1.75)
c. (0.75, -3.25)
d. (-2.5, 0.75)

Suppose a least-squares regression line is given by modifyingabove y with caret equals 4.302 x minus 3.293. what is the mean value of the response variable if xequals20?

Phyllis and chen are saving money to go to a football game. each friend starts with some money and saves a specific amount each week. phyllis made a graph to show the total she has saved at the end of each week. chen wrote an equation to show the total, y, he has saved at the end of each week, x. y = 15x + 15 compare the amount that each friend has when both friends start saving. select the correct answer from the drop-down menu to complete the statement. phyllis starts with $ and chen starts with $

Simplify (1/2)4th power a. (1/16) b.(1/8) c.(1/4)