Solve the system of equations using substitution!
-5r + y=-3
3.r-Sy= 24

Assume that a population of 50 individuals has the following numbers of genotypes for a gene with two alleles, b and b: bb = 30, bb = 10, and bb = 10. calculate the frequencies of the two alleles in the population’s gene pool.

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?

If x is 6, then 7x= a. 13 b. 42 c. 42x d. 76