Which of the following best describes the expression 7(y + 5)?

the sum of two constant factors seven and five plus a variable
the product of two constant factors seven and five plus a variable
the sum of a constant factor of five and a factor with the product of two terms
the product of a constant factor of seven and a factor with the sum of two terms

LAST OPTION.

Step-by-step explanation:

To solve this exercise is important to remember the following definitions:

In this case, you have this expression:

Notice that the there is an addition of two terms ( and ) inside the parentheses.

Outside the parentheses you can notice that the number is multiplying the sum of the terms  mentioned before.

Therefore, you can conclude that the best description for this expression is:

The product of a constant factor of seven and a factor with the sum of two terms.

last one

Step-by-step explanation:

the answer is  

a.

4,624π mm2

step-by-step explanation: