draw a histogram to represent the following data
Class 0-6 6-12 12-18 18-24 24-30 30-36
Frequency 4 , 8, 15, 20, 12, 6
a^7 x 1/a^2
75= x+ 1/3x
30-14
1/a^2
W(1)
33-5*3/5+9
5*8+48/4
40/4+8*7
$$\int_{\Box}^{\Box}(\Box) d\Box$$ x/((x^2)+1)