I think the answer is 140, because in the question is asked twice angle R, so I multiplied 70 x 2= 140.
Answer= 140
Hope this helps!!
and sorry if I get it wrong
Answer: b) 15.7
<u>Step-by-step explanation:</u>
Look at the z-table (below) to find 0.2500
Notice that the value is not on the table but is between 0.2486 and 0.2517 which are located on the z-table at 0.67 and 0.68
The given value is closer to 0.2486 so use 0.67 as the z-score.
Now, let's find the x-value using the formula: 

During each minute, he laughs 5 times
he watches 3 comedy shows....each one being 40 minutes....so thats a total of : 3 * 40 = 120 minutes
and if he laughs 5 times per minute....120 * 5 = 600 laughs per day <==
2/3x + 6 - 1/3x -4 = -6
1/3x + 2 = -6
1/3x = -6 - 2
1/3x = -8
x = -8 * 3
x = -24