Help with this stats ANOVA question?

Hi, can somebody help me with this stats question? Its the last question on the last homework assignment of the semester and I haven't really been getting this one-way analysis of variance stuff.

For each of the following situations, find the degrees of freedom for the F statistic and then use table E to approximate the P-value.

a - 7 groups are being compared with 5 observations per group. The F value of the statistic is 2.69
 
b - 5 groups are being compared with 11 observations per group. The F value of the statistic is 2.43

c - 6 groups are being compared using 34 total observations. The F value of the statistic is 3.06

Or maybe if you can just help me with the first one I might be able to finish the others on my own if its well explained.