8th grade = 3x = 3(47) = 141 band members.
7th + 8th = 188
7th = x
8th = 3x
x + 3x = 188 ; x = 47 ; 47 + 3(47) = 47 + 141 = 188
4x = 188
4x / 4 = 188 / 4
x = 47 --> 7th grade
8th grade = 3x = 3(47) = 141
To check:
x + 3x = 188 ; x = 47 ;
47 + 3(47) = 188
47 + 141 = 188
188 = 188
Its alright dude just gotta work hard and study i know you can do it
Answer:

Step-by-step explanation:
Look at the picture.

Answer:
15
Step-by-step explanation:
-x=-15
x=15
105 -24 = 120 - 39
81 = 81
I had these options :
<span>
f(x) = x12
f(x) = log12x
f(x) = 12x
f(x) = logx12
</span>my answer is <span> f(x)=log 2x.</span><span>
</span>