Sarah has a flower bed that has an area of 220.5 sq feet. she wants to fill out 0.3 of the bed with roses. how man sq feet should she use for roses? a. 92.33 b. 66.15 c. 9.232 d. 6.615 note: tell me how u got the answer with steps

ANSWER
b. 66.15

EXPLANATION
Just multiply 220.5  and 0.3
220.5 x 0.3 = 66.15

, and

for

step-by-step explanation:

we can analyze the pattern at which the terms increase. let us denote , , , so that we can call

1 the 1st term, 3 the 2nd term, 6 the 3rd term,etc.

note the following:

from the 1st term (1) to the 2nd term (3), we go up by 2,from the 2nd term (3) to the 3rd term (6), we go up by 3from the 3rd term (6) to the 4th term (10), we go up by 4, andfrom the 4th term (10) to the 5th term (15), we go up by 5.

the pattern: to get the next term value, we just add the next term number (e.g. 1st, 2nd, to the previous term value (term values are the given numbers in the question, 1, 3, 6, 10, 15,

from , to get to , we add

from , to get to , we add

etc.

we need to form a recursive formula, a formula that has the next term as a function of the previous term. so a possible recursive formula can be

, and for

Ithink your answer is c hope that