3x+7=22
Subtract 7 to both sides
3x=15
Divide by 3
x=5
The answer would be B. because a unit rate is usually equal to one for the sake of conversion
10*3=30
30*3=90
90*3=270
270*3=810
or
10*3^1=30
10*3^2=90
10*3^3=270
10*3^4=810
the next two terms of this sequence are 270 and 810.
Answer:
C (1,1) is another point on the line