17+x=57.
So, subtract 17 from both sides
X=40
There are 12 boys enrolled in algebra 2
3(x-7)+8=-20
Multiply the bracket by 3
(3)(x)(3(-7)+8= -20
3x-21+8= -20
3x-13= -20
Move -13 to the other side. Sign changes from -13 to +13.
3x-13+13= -20+13
3x= -7
Divide by 3
3x/3= -7/3
x= -7/3 or in mixed number : -2 1/3
Answer : x= -7/3 or in mixed number : -2 1/3
I'm pretty sure it should be the 45. or A
Answer:
B. 1069 feet
Step-by-step explanation:

Adding the initial 125 feet to this, you get a total height of 1069 feet. Hope this helps!