Three times the sum of a number and four is twenty-one. find the number.

the number is

The answer to your question is: x = 3

Step-by-step explanation:

                                            3(x + 4) = 21

                                              x  + 4 = 21/3

                                             x + 4 = 7

                                            x = 7 - 4

                                            x = 3

n = 9/3 = 3

Step-by-step explanation:

Translating these words into symbolic statements:

3(n + 4) = 21.

Perform the indicated multiplication, obtaining:

3n + 12 = 21

Combine the constant terms:  3n = 9

Finally, solve this for n: n = 9/3 = 3

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step-by-step explanation:

change of stock price/initial stock price on friday * total stock value = change of stock value

0.89/73.73 *x = 42.72

x=3539.04 = total stock value at initial stock price on friday .

total stock value at initial stock price on friday/ initial stock price on friday = number of shares

3539.04/73.73 = 48 shares

they own 48 shares of this stock