A scientist uses a submarine to study ocean life. She begins at sea level, which is an elevation of 0 feet.
She travels straight down for 20 seconds at a speed of 2.4 feet per second.
She then travels directly up for 48 seconds at a speed of 0.5 feet per second.

After this 68-second period, how much time, in seconds, will it take for the scientist to travel back to sea level at 4.3 feet per second? Round your answer to the nearest tenth of a second. plz help with this im timed and my teachers not helping

Which description is represented by a discrete graph? kiley bought a platter for $19 and several matching bowls that were $8 each. what is the total cost before tax? the temperature at 9 a. m. was 83° f and is heating up at an average rate of 6°f per hour. what is the temperature x hours later? juan ate an egg with 78 calories and some cereal with 110 calories per serving for breakfast. what is the total amount of calories he consumed? a bottle contained 2,000 ml of liquid and is being poured out at an average rate of 300 ml per second. how much liquid is left in the bottle after x seconds?

In one month jillian made 36 local phone calls and 20 long-distance calls what was her ratio of local calls to long-distance calls for that month?

Adan has decided to purchase an $9000 car. he plans on putting 20% down toward the purchase and financing the rest at 7.9% interest rate for 3 years. find his monthly payment a) $225.29 b) $298.81 c) $204.78 d) $236.89