donna purchased a prepaid phone card for $30. long distance calls cost 16 cents a minute using this card. donna used her card only once to make a long distance call. if the remaining credit on her card is $29.96, how many minutes did her call last?

Find the commission on a $590.00 sale if the commission is 15%.

Elizabeth claims that the fourth root of 2 can be expressed as 2^m since (2^m)^n = 2. find the values of m and n for the case where elizabeth's claim is true.

Atype of plant is introduced into an ecosystem and quickly begins to take over. a scientist counts the number of plants after mmonths and develops the equation p(m)= 19.3(1.089)^m to model the situation. most recently, the scientist counted 138 plants.assuming there are no limiting factors to the growth of the plants, about how many months have passed since the plants werefirst introduced? a)o 6.1b)0.6.6c)10 72d)o 23.1