What number can round to760 when it rounds to nearest ten and 800 when it rounds to nearest hundred?

Iwant to know what 3g+5h+4g-2h is my teacher is too selfish to tell us

An empty bucket is placed under a faucet dripping at a constant rate of 4 milliliters per minute. with the given information, which of these statements is a reasonable conclusion? a there will be 24 milliliters of water in the bucket after 16 hour. b there will be 60 milliliters of water in the bucket after 14 hour. c there will be 160 milliliters of water in the bucket after 20 minutes. d there will be 100 milliliters of water in the bucket after 40 minutes.

What is the image of c for a 90° counterclockwise rotation about a? (3, 7) (-1, 3) (7, 3)