Let p: The whole has one digit. Let q: The whole is less than 10. Which represents "The whole number has one digit if and only if the whole number is less than 10"?

p V q
p ^ q
p -> q
p <-> q

The third and fourth one are meant to be arrows but I can’t find the arrow on my phone just in case if anybody’s wondering what they are

The function models the number of accidents

Lola says these two expressions have the same value. expression a expression b which explains whether lola is correct?

Monitors manufactured by tsi electronics have life spans that have a normal distribution with a standard deviation of 1800 hours and a mean life span of 20,000 hours. if a monitor is selected at random, find the probability that the life span of the monitor will be more than 17,659 hours. round your answer to four decimal places.