Homozygous dominant individuals

Individuals that are homozygous recessive for a particular locus produce viable offspring at only 95% of the rate that heterozygous or homozygous dominant individuals do.

(a) What is the selection coefficient for the homozygous recessive genotype? (b) What is the selection coefficient for the other genotypes? allele? (c) Assuming allele frequencies of A1-0.78 and A2-0.22, what is the average excess of the A1