Answer
13 more than the product of 21 and d.
Work Step by Step
Two things are being multiplied, so we say the phrase "the product of" and then list the two things being multiplied, in this case 21 and d. However, the expression shows that 13 is being added to 21d, so we denote this by saying the phrase "13 more than" the product of 21 and d.
