Abreathalyser test is used by police in an area to determine whether a driver has an excess of alcohol in their blood. the device is not totally reliable: 5 % of drivers who have not consumed an excess of alcohol give a reading from the breathalyser as being above the legal limit, while 15 % of drivers who are above the legal limit will give a reading below that level. suppose that in fact 12 % of drivers are above the legal alcohol limit, and the police stop a driver at random. give answers to the following to four decimal places.

a. what is the probability that the driver is incorrectly classified as being over the limit?
b. what is the probability that the driver is correctly classified as being over the limit?
c. find the probability that the driver gives a breathalyser test reading that is over the limit.
d. find the probability that the driver is under the legal limit, given the breathalyser reading is also below the limit.

If f(x)=2x+2and g(x)=x^3, what is (g•f)(2)

At river bank, checking account customers earn 0.75% interest a month on their account balances, pay no service fees for writing checks, and pay a monthly $2.00 financial charge. calculate the income earned in one month on the checking account for a customer with an account balance of $1,000. a. $4.25 b. $5.50 c. $6.75 d. $7.25 checking account earnings at baker’s bank are expressed by the equation: i = -0.09x + 10.2. while the earnings at elite bank are modeled by: i = -0.02x + 7.5. in both cases, x is the number of checks written. at what number of checks will elite bank start generating more checking account income than baker's bank? a. 12 b. 25 c. 39 d. 42 emilio’s checking account had a balance of 728.32 at the beginning of the week. he wrote checks for the following amounts throughout the week: $99.48, $33.50, $18.23, and $72.05. he also deposited his paycheck in the amount of $1,109.90. what is his account balance at the end of the week? a. $1,192.35 b. $1,222.86 c. $1,540.52 d. $1,614.96

X-10/4 when x = –18 a 7 b –2 c –7 d 2