1. A submarine is descending to examine the sea floor 6200 feet below the surface it takes a submarine four hours to make this decent what was the submarines change in depth per hour 2. Write an equation to represent the relationship between
the submarines elevation and time. Use y to represent the
elevation in feet and x to represent the time in hours.

3. Another submarines descent can be represented as Y equals -3100 X where y is the elevation and ask is time and x is time in hours how long will it take the submarine to make the next descent

Jonathan pays $1.90 per pound for potatoes. he buys 8.3 pounds of potatoes. he determines that he will pay $15.77, before tax, for the potatoes. which best describes the reasonableness of jonathan’s solution? jonathan’s answer is reasonable because there are two decimal places in the factors and two in the product. jonathan’s answer is unreasonable because there are three decimal places in the factors and two in the product. jonathan’s answer is reasonable because is 16, and 16 is close to 15.77. jonathan’s answer is unreasonable because is 8, and 8 is not very close to 15.77.

What is the quadric regression equation that fits these data

Solve 2x+y=3 x+y=5 in substitution method