Question

MEDAL FOR THE CORRECT ANSWER!

As part of an Earth Science project, Erin tracked the amount of rain fall for 4 weeks. She started tracking after finding some initial data on the year's rainfall to date.


Week Rainfall
1 5.5
2 8
3 10.5
4 13

If the linear function representing the amount of rainfall each week is f(w) = 2.5w + 3. What does the 3 represent in this function?
The amount of rainfall in week 0.

The week that Erin collected data.

The amount of total rainfall.

The amount the rainfall increased each week.

Answer 1

The amount of rainfall in week 0.

Answer 2

w represents the week and 2.5 is the rainfall increase. So 3(initial rainfall), 5.5 in week one (2.5 * 1 + 3 = 5.5), 8 (2.5 * 2 + 3) and so on.