The function c(x) = 63 - (1.03)" models the cost in dollars, c, of 1 ounce of a certain chemical used in a laboratory, v represents the number of years since 1990. How much does an ounce of the chemical cost in 2005? ​

Evaluate the integral. (sec2(t) i t(t2 1)8 j t7 ln(t) k) dt

The random variable x is the number of occurrences of an event over an interval of ten minutes. it can be assumed that the probability of an occurrence is the same in any two-time periods of an equal length. it is known that the mean number of occurrences in ten minutes is 5.3. the appropriate probability distribution for the random variable

Water flows at a steady rate from a tap. its takes 40 seconds to fill a 4 litre watering can from the tap. the rate at which water flows from the tap is halved. complete: 4 litres into cm3