Roberta's club has a secret knock for its clubhouse door that only its members know. the members remember to knock on the door exactly n times in a row, where five more than three times n is equal to the difference between 21 and n. how many times in a row do members knock on the clubhouse door

your question is incomplete, write all the numbers in the sequence that it tells you.  

step-by-step explanation:

(0,,,0)

step-by-step explanation:

the table of x and y values is shown in the attached pic(part of question)

we have to decide according that graph

given points are (0, 0) (–1, 0), (2, 0)

when we graph these points on graph they show an increasing line as shown in the attached pic

1 mph

step-by-step explanation:

if the question is asking how much does she drive per mile then,

13 / 13 = 1 mph

the graph line crosses the x axis at both -6 and -2, so the answer would be the second one.