Tara worked on her science fair project for 4 hours every day for 4 days. Which is the best estimate of the number of hours Tara spent on her science project?
A. 20
B. 16
C. 25
D. 30
What is the answer?

Which equation matches the graph shown ?

Four individuals pool money together to start a new business and agree to split the profits equally. n invests $6,000, x invests $2,000, y invests $8,000 and z invests $4,000. if the profits for the first month were $100,000, y receives than if the profits were divided in proportion to how much they invested.

Is the power produced directly proportional to the wind speed, give reasons for your answer?