Answer:
Step-by-step explanation:
B is the answer
P(t+1) = -2
divide by P
Subtract 1
T equals negative 2 over P minus 1
T = -2/P -1
It wouldbe 10 because the patter goes 40,20,10,40,20 its repeating so the missing number would be ten
For example x^2=25
Without x the expression wouldn't exist, it allows you to calculate unknowns for example in a physics experiment using v=u+at