sarah work at a concession stand for 2 hours and erans 22.50$, but if she works for 4 hours she earns $45. what is the rate of change

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.

What are the equivalent ratios for 24/2= /3= /5.5=108/ = /15

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