If a letter is chosen at random what is the probability that it will be a vowel

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left

Aline passes through 3,7 and 6,9 what equation represents the line

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