Given that f(x) = 2x + 1, find g(x) if g(x) = 2[f(x)]^2 - 1

Answer this question only if you know the 30 points and

The ratio of rock songs to dance songs on jonathan’s mp3 player is 5: 6. the total number of rock and dance songs jonathan has is between 101 120. how many rock songs does he have?

Noor brought 21 sheets of stickers. she gave 1/3 of a sheet to each of the 45 students at recess. she wants to give teachers 1 1/2 sheets each.