Thus, a genotype's frequency will decline or increase depending on whether its fitness is lower or greater than the mean fitness, respectively. In the particular case that there are only two genotypes of interest (e.g. representing the invasion of a new mutant allele), the change in genotype frequencies is often written in a different form.
1 Places such as Lowes and Home Depot will charge around $60 per day. 2  According to DoItYourself.com, they claim that average daily rental is going to be around $60 per day. 3  They also note that a good pressure washer should cost you around $350. 4  SunbeltRentals.com offers a variety of pressure washers.
The cost of buying a pressure washer ranges from $180 to $400. This means that with 3 to 4 rentals, you have covered the cost of buying your own. You therefore need to evaluate this carefully and see if it is value adding. Rental Prices of Power Washers. The best place to rent your washer from is the local store.