1. imagine that the class had 25% of students with free earlobes and 75% with attached earlobes. what would this suggest about the frequency of the dominant (f) and recessive (f) alleles for these traits in the class population? explain your reasoning. (3 points)
m=slope & b= y-intercept
just plug the numbers into the equation which results in y=-10x-7
75 + 2x = total price
75 + 2(10) = 95
there are 15 - 3000lb cars and 3 - 5000lb cars.
we can solve a problem with two variables by setting up a system of equations based on the information given in the problem.
since we know that there are 18 cars total, our first equation is:
a + b = 15, where a = the amount of 3000lb cars and b = the amount of 5000lb cars.
we also know that the total weight of the cars is 30 tons, or 60,000lbs. so, the second equation is:
3000a + 5000b = 60,000
using our first equation to solve for 'b', we get b = 15 - a. we can then substitute this expression in for 'b' in the second equation:
3000a + 5000(18 - a) = 60,000
distribute and combine like terms: 3000a + 90,000 - 5000a = 60,000 or 90,000 - 2000a = 60,000
subtract 90,000 from both sides and divide by -2000 gives us a = 15.
15 + b = 18, so b = 3.