Which of the following are steps in practical problem solving? assign an identifying variable to the quantity to be found. make a guess at the value of the variable. write a sentence stating conditions placed on the quantity. check if the value is correct. solve the sentence for the variable.

1. Assign an identifying variable to the quantity to be found.

2. Write a sentence stating conditions placed on the quantity.

3. Solve the sentence for the variable.

518,400

step-by-step explanation:

the area is multiplying all the given measurements together.

40 * 18 * 30 * 24 = 518,400

b

step-by-step explanation: