a. 84 < n + (n + 2) + (n + 4) < 96
b. 26 < n < 30
using 'n' to represent the smallest even number, the next even number would be 'n + 2' and the next even number would be 'n + 4'. so, the expression to represent three consecutive even numbers is: n + (n + 2) + (n + 4).
since the sum of the these numbers needs to be between 84 and 96, we can set up the following inequality:
84 < n + (n + 2) + (n + 4) < 96
in order to solve for 'n', we must first combine like terms:
84 < 3n + 6 < 96
subtract 6 from all sides: 84 - 6 < 3n + 6 - 6 < 96 - 6 or 78 < 3n < 90
divide 3 by all sides: 78/3 < 3n/3 < 90/3 or 26 < n < 30.
i'm pretty sure its 70%
because if she got 12 out of 15 then she got three wrong so that would mean she has 70% not 80% sorry to confuse you
step-by-step explanation: the first equation is the same for all three graphs, so you are really just focusing on the second. plug points on both sides of the graph into the equation. the correct answer is a