:
which represents the explicit formula for the arithmetic sequence an=15+5(n−1) in function form?

a
f(n)=5n+15
b
f(n)=n+20
c
f(n)=5n+10
d
f(n)=n+10

For this case we have the following arithmetic sequence:

To write in function form, we apply distributive property to the terms within parentheses:

Different signs are subtracted and the major sign is placed.

We simplify:

Option C

y < -3

step-by-step explanation:

-3y - 2 > 7

-3y -2 + 2 > 7+2

-3y > 9

-3y/-3 < 9/-3   (change the inequality sign when multiplying or dividing by a negative number)

y < -3