Which equation is equivalent to √x + 11=15
a x + 11 = 225

b x + 121 = 225

c √x=15+11

d √x=15-11

√x + 11=15  x=16
√x= 15-11    x=16
Answer is D

72 is the mode because it shows up the most number of times

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.