For the equation 21 + 3x = 3x + k, which value of k will create an equation with no solutions? PLEASE EXPLAIN YOUR ANSWER A LOT OF PEOPLE JUST SAY ANYTHING FOR POINTS i’ll give brainiest

A. x
B. 3x
C. 15
D. 21

The circumference of a circle is 5 pi cm. what is the area of the circle?

If given an equation of a line such as -1/2x+6 how would you create an equation of a line parallel and perpendicula to this line that goes through another point such as (4,10)

Adriana sold 50 shares of a company’s stock through a broker. the price per share on that day was $22.98. the broker charged her a 0.75% commission. what was adriana’s real return after deducting the broker’s commission? a. $8.62 b. $229.80 c. $1,140.38 d. $1,149.00