Teresa is putting money into a checking account. Let y represent the total amount of money in the account (in dollars). Let x represent the number of weeks Teresa has been adding money. Suppose that x and y are related by the equation y-350 + 20x.
Answer the questions below.
Note that a change can be an increase or a decrease.
For an increase, use a positive number. For a decrease, use
negative number.
What is the change per week in the amount of money in the account?
What was the starting amount of money in the account?

Luke started a weight-loss program. the first week, he lost x pounds. the second week, he lost pounds less than times the pounds he lost the first week. the third week, he lost 1 pound more than of the pounds he lost the first week. liam started a weight-loss program when luke did. the first week, he lost 1 pound less than times the pounds luke lost the first week. the second week, he lost 4 pounds less than times the pounds luke lost the first week. the third week, he lost pound more than times the pounds luke lost the first week.

What unit of been sure would be appropriate for the volume of a sphere with a radius of 2 meters

Given abc find the values of x and y. in your final answer, include all of your calculations.