Answer:
(1.5,-2.6)
Step-by-step explanation:
Given the polar coordinates (-3,60°).
Let our Cartesian coordinates be (x,y)
#We know that when converting the rectangular coordinates (x,y) to polar (r,θ), then:

#Using the illustration above, we can express our polar coordinates as:

#Solve simultaneously to solve for x and y:

Hence, the Cartesian coordinates are (1.5,-2.6)
To find the unit price of each item you want to divide:
Fresh water:
$1.76 / 16 = $0.11
Spring water:
$2.40 / 20 = $0.12
So the statement that is true is B) Fresh water has a lower unit price of $0.11/ounce.
Hope this Helps!!
First way. you could round to the tens place and add. 370 + 230 about 600.
round to the nearest hundreds. 400 plus 200. about 600.