30+8/5=31.6 you have to break the whole question down to get the answer.
"The sum of r and 7" can be represented as r + 7
Answer:

Step-by-step explanation:
we know that
In the right triangle ABC
The function sine of angle 68 degrees is equal to divide the opposite side SB by the hypotenuse AC
so

substitute the values and solve for AC


