Mendelian Genetics: Dihybrid Crosses and Pea Plant Traits

In Mendel's pea plant experiments, the round allele ($R$) is dominant to the wrinkled allele ($r$), and the yellow allele ($Y$) is dominant to the green allele ($y$). If a plant with genotype $RrYy$ is self-fertilized, what is the expected phenotypic ratio among the F$_1$ progeny?

A pea plant with genotype $RRyy$ is selfed. What phenotypes will be observed among the F$_1$ progeny?

If a plant with genotype $rrYy$ is self-fertilized, which of the following phenotypic ratios is expected among the F$_1$ progeny?