Which expression represents the calculation “subtract 30 from 40, then multiply by 4"?

(40 - 30) * 4

To represent the calculation "subtract 30 from 40, then multiply by 4," you can use the following expression:

(40 - 30) * 4

To break it down further:

1. Subtract 30 from 40: 40 - 30 = 10
2. Multiply the result by 4: 10 * 4 = 40

Therefore, the expression (40 - 30) * 4 represents the calculation "subtract 30 from 40, then multiply by 4."

The expression that represents the calculation "subtract 30 from 40, then multiply by 4" is (40 - 30) * 4.