Four ninths of a number c increased by 4 is 18 less than one eighth times another number d. solve for c. a. c=9/32 d 31 1/2 b. c=4/72 d 4/72 c. c=9/32 d - 49 1/2 d. c=4/72 d - 31 1/2 i would like to see how the answer was reached, not just the answer.

Each of the walls of a room with square dimensions has been built with two pieces of sheetrock, a smaller one and a larger one. the length of all the smaller ones is the same and is stored in the variable small. similarly, the length of all the larger ones is the same and is stored in the variable large. write a single expression whose value is the total area of this room. do not use any method invocations.

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

Can someone check if i did this correct. it’s number 4 if you’re wondering.