Leon has a container filled with 500 grams of coffee beans. Each morning, he uses 4 grams to make a cup of coffee. Which expression represents the amount of coffee beans remaining after d days? Expressions:
A. 4d - 500
B. 500d + 4
C. 500 - 4d
D. 496d

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.

Svetlana's hair is 4 4 centimeters ( cm cm) long. her hair grows 1 . 5 cm 1.5cm per month. svetlana wants her hair to be less than 1 6 cm 16cm long. write an inequality to determine the number of months, m m, svetlana can allow her hair to grow so that it is less than 1 6 cm 16cm long.

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²