Answer:
<h2>x= -2</h2>
Step-by-step explanation:

Collect like terms and simplify

Divide both sides of the equation by 8

Simplify

Answer:
D. QR.
Step-by-step explanation:
1) in ΔQRS the side QR is opposite the angle S (47°); QS is opposite the angle R (70°); RS is opposite the angle Q (63°);
2) the rule is: greater angle is opposite the longer side;
3) according to the rule the angle 'S' is the smallest, then the side QR is the shortest.
The answer should be 11 since adding all the x’s up before 13 equals 11
18 / 2 = 9 || 9 x 3 = 27. Therefore, 27 students are registered in Bob’s class.