Can someone explain this answer? I got the first one is 116 and the second one is 84160 but they are wrong

The multiple choices for the first one is

a) 265664

b)84160

c)344000

d)116

The multiple choice for the second one is

a) 84160

b) 905.92

c)116

d)2498.21

Use the following information to answer questions 11-20. The cost of a leading liquid laundry detergent in different sizes is given in the table: Size (ounces) Cost ($) 16 3.99 32 4.99 64 5.99 200 10.99 Assuming that x is the cost of the laundry detergent and y is the size, use the equation below to calculate the correlation coefficient and answer questions 12-20. n E(xy) -(Ex) (Zy) What value should you enter into the equation location indicated by thelempty brackets below (the part of the above equation that is blanked out below)? r = n E(xy) -(Ex) (Zy)Use the following information to answer questions 11-20. The cost of a leading liquid laundry detergent in different sizes is given in the table: Size (ounces) Cost ($) 16 3.99 32 4.99 64 5.99 200 10.99 Assuming that x is the cost of the laundry detergent and y is the size, use the equation below to calculate the correlation coefficient and answer questions 12-20. r n E(ry) - (Ex) (Zy) What value should you enter into the equation location indicated by the empty brackets below (the part of the above equation that is blanked out below)? r n _(xy)-(Ex) ( Zy)