It is given in the question that
Ann, Chang, and Kareem sent a total of 89 text messages over their cell phones during the weekend. Ann sent 9 fewer messages than Chang. Kareem sent 3 times as many messages as Ann.
Let number of messages Chang sent be x. And Ann sent 9 fewer than Chang, so Ann sent (x-9) messages. And Kareem sent 3 times as many messages as Ann, so Kareem sent 3(x-9) messages.
And the total messages are 89. That is

Combining like terms

So Chang sent 25 messages, Ann sent

And Kareem sent

0.6y + 0.02 = 0.3y - 0.4
Subtract 0.3y from both sides.
0.3y + 0.02 = -0.4
Subtract 0.02 from both sides.
0.3y = -0.42
Divide both sides by 0.3.
y = -1.4
Answer:
a.
Step-by-step explanation:
there a hundread of times because 8 students 8 chairs they can do what set do want to do.
My answer to you is R / 6 = 14
Hope This Helps :)
79.57 times 12% = 70.02
70.02 times 7.75% = 5.43
70.02 plus 5.43 = 75.43