Takuya's parents gave him $100 dollars as a birthday gift. Since he loves board games, he spent $20 out of his present on board games at the end of each month until his money ran out.
Let f(n) be the amount of money that remained from Takuya's present during month n where n=1 represents the month he received his present.
f is a sequence. What kind of sequence is it?

Well, He spent all of his money on board games in five months. Because, total money =$100

he spent $20 out of his present on board games at the end of each month

money spent in 1 month is $20

Let's assume he takes 'x' months

so, total money spent = money spent in 1 month* total number of months, So we get 5.  Well, The best answer will be is 5. Good Luck!

answer:   28.56 feet (approx)

step-by-step explanation:

since, triangle abc has measure of angle c equal to 55 degrees, measure of angle abc equal to 90 degrees, and length of bc equal to 20 feet.

we have to find out the measurement of segment ab.

therefore, tan 55° =

but bc = 20 feet.

⇒ tan 55 ° =  

⇒ ab = 20 × tan 55 °

⇒ ab = 20 × 1.42814800674

⇒ ab = 28.5629601348   ≈ 28.56 feet