Decide whether or not each equation represents a proportional relationship. a. Volume measured in cups (c) vs. the same volume measured in ounces (z): c=18z , 1 of 4. Select Choice b. Area of a square (A) vs. the side length of the square (s): A=s2 , 2 of 4. Select Choice c. Perimeter of an equilateral triangle (P) vs. the side length of the triangle (s): , 3 of 4. Select Choice d. Length (L) vs. width (w) for a rectangle whose area is 60 square units: L=60w , 4 of 4. Select Choice

step-by-step explanation:

12: 00 p.m. to 7: 00 p.m. is a total of 7 hours.

4: 00 p.m. to 7: 00 p.m. is a total of 3 hours.

this means that from 4: 00 p.m to 7: 00 p.m. this represents 3/7 of what was lost from 12: 00 p.m. to 7: 00 p.m.

after knowing this, after doing 11,600 - 6,800 = 4,800

4,800 represents 3/7 of what was lost for 7 hours.

we then divide 4,800 by 3 which gets 1,600.

because we know that 1,600 represents 1/7 of how much water was lost, we just have to multiply by 7, which gets 11,200.   after adding 11,200 to how much water was left at 7: 00 p.m. which was 6,800. 11,200 + 6,800 = 18,000

this means that the pool originally had 18,000 gallons in the pool.

you can also check your work by doing 18,000 - 4(1600), which becomes           1800 - 6400 which gets you 11,600.

the correct answers i think are b. and d.

give me brainliest if it is correct!

113.1

step-by-step explanation:

v=4

3πr3=4

3·π·33≈113.09734