Explore Westonci.ca, the premier Q&A site that helps you find precise answers to your questions, no matter the topic. Get immediate and reliable answers to your questions from a community of experienced experts on our platform. Explore comprehensive solutions to your questions from a wide range of professionals on our user-friendly platform.

Each Sunday, Mario weighs himself. Here are his weight changes over a 4-week period.

Week 1 2 3 4
Weight Change –1.8 +0.9 –1.4 +0.4


How much has Mario's weight changed over the entire 4 weeks?

A.
1.9 pounds

B.
–4.5 pounds

C.
–1.9 pounds

D.
4.5 pounds