To do this, you can just multiply across. 3 times 1 equals 3 so your numerator is 3. 2 times 4 equals 8. Then, your answer would be 3/8. Hope this helps :)
Mean = 29
Q1 = 19
Q2 = 26
Q3 = 38
IQR = Q3 - Q1 = 38 - 19 = 19
Fist plug in 7 in to the X values like so 12 (3 (7) +5 (7)) then solve in side the parenthesis 3×7 =21 and 5×7=35 then add them 35+21=56 and then you are left with 12(56) or 12×56= 672
To buy the radio it would cost $22.5 I believe
To have it delivered it would cost $2.5 I believe
So overall that would cost $25
( I apologize if I'm wrong)
The answer would be 1,4, and 7. if you place each of those into the "3,71_" and then divide them by 3, you'll see that those three number make it divisible by three. its pretty much a guess and check question. you just have to test each answer choice.
