Their total bill is $356.88. If they pay $220 in cash and charge the remainder, how much will they charge?

They will charge $136.88

Step-by-step explanation:

Elizabeth is correct.

Findinf the remainder in this situation means finding the difference (subtraction)

356.88 - 220 = 136.88

, and

for

step-by-step explanation:

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

note the following:

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

c-   36

taxicab circle radius 9 has 4(9) = 36 points