What are the first 4 terms of the following sequences: a. {(−3)^n}n∈N
b. {(−1)^n + 1}n∈N (2)

Use index substitution to rewrite the following summation such that the index starts at 0. Then use the geometric series theorem to compute the value of the summation.
6
Σ (-2)^i-3
i=3

9 sandwiches per hour

step-by-step explanation:

when we have a rate, we want a 1 in the denominator

27/3 = 9

27 sandwiches/ 3 hours = 9 sandwiches/hour

answer4 to the second power is 16

and 4 to the third power is 64,

chemists are often responsible for designing a chemical reaction and analyzing the products obtained from it. one significant part of designing a chemical reaction is determining the amount of each reactant that is needed and the amount of each product that will be produced. in order to do so, chemists use stoichiometry, the quantitative relationships between reactants and products.