Some cars turn out to be "lemons" but, the quality of a new car is something that cannot be ascertained until after the car has been driven several hundred miles. the unlucky purchaser of a lemon may then try to unload it, by resale to someone else. let’s assume that 10% of all new cars are lemons, and that 90% of all lemons and 5% of all non-lemons are offered for sale within the first year of ownership. if so, what fraction of all cars offered for sale within the first year are lemons?

Two thirds of the cars offered for sale within the first year are expected to be lemons.

Step-by-step explanation:

The fraction of cars that are offered for sale within the first year and are lemons can be calculated as follow:

The proportion of lemons for sale within the first year is the product of the proportion of lemons within the new cars (10%) and the proportion that are offered for sale, given that they are lemons (90%):

The proportion of no-lemons that are for sale is the product of the proportion of no-lemons within new cars (90%) and the proportion of this group that are offered for sale (5%):

So the fraction becomes

f(x) = y

f(-3) = -5

step-by-step explanation:

u = -(6/7)w

step-by-step explanation:

place all values with 'u' on one side of the equation.

4u + 8w = - 3u + 2w

4u + 3u = 2w - 8w

further simplify the equation by solving the addition and subtraction.

7u = - 6w

make 'u' the independent variable by placing its co-efficient on the right-hand side.

u = - (6/7)w