The third-grade students are traveling to the science museum in 8 busses. there are 40 students on each bus. how many students are going to the museum?

.

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

the formula of a slope:

we have the points (-2, 7) and (2, 3). substitute:

320ft

step-by-step explanation:

120 divided by 3 equals 40

40 times 4=160

160 times 2=320