4. A rectangular trunk has a volume of 26,880 cubic inches. The trunk is 4 feet long by 28 inches wide. What is the trunk's height?
F. 20 in. G. 60 in. H. 240 in. I. 2,880 in.
5. What is the volume of the right triangular
prism?
A. 93.3 m
C. 280 m
B. 140.3 m
D. 560 m3
4 m
10 m
14 m
16 words

Explanation is in the file

cutt.ly/rzNrBcz

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Step-by-step explanation:

, 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