The equation -5x^2+72x+378 models the number of students enrolled in a school where x is the number of years since the school first opened in 1990. how many students did the school have when it opened?

f

step-by-step explanation:

f

1. 34

2. 268

3. x=14.4

step-by-step explanation:

logv3(x+2)=1

rewrite in exponential form:

logb(x) = y is equal to b^y =x

b = 3, y = 1

now solve for x:

3^1 = x+2)

x = 3-2

x = 1

see the picture for the graph.