This is a pond in the shape of a prism. It is completely full of water. Colin uses a pump to empty the pond. The level goes down by 30cm in the first 30 minutes. Work out how many minutes Colin has to wait for the pond to completely empty.

answer: your correct answer is b. d.

step-by-step explanation:

it would be 3 ÷by 6 because the number on each side

-3.5 degrees per hour

step-by-step explanation:

find the unit rate:

-12   1/4 degrees           12.25 degrees

= - = -3.5 degrees per hour

      3   1/2 hours               3.5 hours

it's a proportional graph.

step-by-step explanation:

8 x 5 = 40         (and you have -8x and -5y)

x= absiss

y= orderly

so you have a proportional graph.