Which calculation is modeled on the number line? -1 1/2 , -1 , -1/2 , 0 , 1,/2 , 1 , 1 1/2

-4/10 + (-7/10) = 1 1/10
-4/10 + (-1/10) = 1 1/2
-4/5 + (-7/5) = 1 1/5
-4/5 + (1 1/5) = -2

If there are 12 moths and some have 31 days and others have 30 days how many have 28 days?

Estimate the area under the curve f(x) = 16 - x^2 from x = 0 to x = 3 by using three inscribed (under the curve) rectangles. answer to the nearest integer.

Create a graph for the demand for starfish using the following data table: quantity/price of starfish quantity (x axis) of starfish in dozens price (y axis) of starfish per dozen 0 8 2 6 3 5 5 2 7 1 9 0 is the relationship between the price of starfish and the quantity demanded inverse or direct? why? how many dozens of starfish are demanded at a price of five? calculate the slope of the line between the prices of 6 (quantity of 2) and 1 (quantity of 7) per dozen. describe the line when there is a direct relationship between price and quantity.