X^2-5x-9=0 has only 1 solution true or false

False; it has two solutions
We know this as we find the discriminant (b squared minus 4ac)
If the solution is equal to zero, then it has one solution. If the solution equals to a positive number, then it has two solutions ;)

Period is the time it takes for one “cycle” to complete. in the parent sine function, period is 2*pi since sin(0) = 0, sin(pi/2) = 1, sin(pi) = 0, sin(3pi/2) = -1, and sin(2pi) = 0. at that point, the sequence repeats itself. i’m not sure if your graph is similar to the sine function since you didn’t provide a picture, but you can find the period by looking at a graph.

You get 1 inch of snow every 2 hours