50 point Please help. Thank you :)

Question 1 What is the value of x?

Question 2 What is the value of x?
A:x=15
B:x=30
C:x=37.5
D:x=52.5

Question 3 What is the measure of angle z in this picture?

The graph represents the gallons of water in a water tank with respect to the number of hours since it was completely filled

When solving this problem: 3025/5.5 = a/90.75 you get 49912.5 which would be the length of one of the sides of a square when the area is only 90.75 inches. is that answer correct, why, and how is it possible?

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?