I need the answer of homework 4 of math 131

Fiona finds1shell on her first day at the beach. Every day that week she finds twice as many as she did the day before. How many shells did Fiona find on the seventh day?

Liam walked 100m around the perimeter of a rectangular playground. How long and how wide could the playground be? give 3 different answers. draw diagrams!

Which expression is a cubic polynomial? A. 3 x squared minus 1 B. x cubed minus 1 C. x squared minus x plus 3 D. 3 x squared minus x plus 3

Carrie spent $1 for every $10 she earned. How much did she earn if she spent $7?

Explain how a Bar can be used to show a subtraction problem

An airplane is traveling 835km/h in a direction 41.5 west of north. Find the components of the velocity vector in the northerly and westernly directions. How far north and how far west has the plane traveled after 2.50h

4. Change the decimal 0.0112 to a fraction.

A sport field is 200 feet long. Write a formula that gives the length L of x sport fields in feet. Then use this formula to determine the number of sport fields in 580 feet.

Mandee is looking for a new car. She has test-driven two cars but can only purchase one. The probability that she will purchase car A is 0.51, and the probability that she will purchase car B is 0.27.

Factor 6q2 - 41q + 30