Use the counting principle to determine the number of elements in the sample space.
The possible ways to complete a multiple-choice test consisting of 17 questions, with each question having four possible answers (a, b, c, or d).

a; x = 0.5

step-by-step explanation:

-10x = -5

x = 0.5

7

step-by-step explanation:

the answer would be 7

, 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

step-by-step explanation:

what does 'mandy have ben 780 bottle caps. ' mean?