A calculator was used to perform a linear regression on the values in the table. The results are shown to the right of the table.
1
10
7
LinReg
y = ax +b
a=-3.1
b=12.9
r2=.9886831276
r=-.9943254636
3
0
-2
What is the line of best fit?
O A. y = 12.9x-3.1
B. y=-3.1% +12.9
C. -0.994 = -3.1x + 12.9
D. y=-0.994x + 12.9

Joel wants to buy a new tablet computer fram a store having a 20% off sale on all tablets. the tablet he wants has an original cost of $190. he also wants to make sure he has enough money to pay the 5% sales tax. part one joel uses the incorect expression 0.95(190)(0.8) to calculate that the tablet will cost him a total of $144.40. describe his error and write the correct expression part two how much will joel pay for the tablet show your work if you answer this question correctly you will receive a prize of 99 points good luck