# Can I get some help please? Thanks!

##### 2 Answers

1086 mm Hg

#### Explanation:

Using the slope method

The change in pressure per degree C

The change in pressure per degree C second interval

# 40^o C - 20^oC = 20^oC

The change in pressure per degree C third interval

The change in pressure per degree C fourth interval

960- 880 = 80/30 = (2.6mm Hg)/1^oC #

averaging the change in pressure for the four intervals

The change in temperature 150-100 = 50 so

Adding this change in pressure to the value of 960 gives

960 + 126 = 1086 mmHg.

this is an approximate value as the the intervals do not give a perfect straight line slope.

I get

#### Explanation:

I would use Excel or a graphing calculator to plot a graph of

I don’t have a graphing calculator, so I plotted the data in Excel.

Excel told me that the equation of the best-fit line was

Substituting