The value v(t) of a $42,000 car after t years that depreciates at 15% per year is given by the formula v(t) = v0(b)t. what is the value of v0 and b, and what is the car's value after 5 years (rounded to the nearest cent)?

Tom and maria typed in words in the ratio of 1 : 5 in 20 minutes. they typed 864 words altogether. find the number of words that each of them typed

Aheated piece of metal cools according to the function c(x) = (.5)x ? 7, where x is measured in hours. a device is added that aids in cooling according to the function h(x) = ? x ? 2. what will be the temperature of the metal after two hours?

Is the power produced directly proportional to the wind speed, give reasons for your answer?