Gaga est un ☝ et une bonne nouvelle de mon temps à me dire je me demande pourquoi
For the fifth term, n = 5.
Just replace n with 5 in the expression.
Then evaluate the expression.

A: -15/5 degrees Celsius
B: -15/5=3 degree Celsius
every 5 weeks it change -15°c
so each week it changes -3°c
Slope intercept form is y=mx+b
first plug in m
y=-1/2X + b
now plug in the point (8,1) for the x and the y
1=-1/2(8) + b
now you need to solve for b
simplify
1=-4+ b
add 4
5=b
now that you know b
you can plug it into the equation along with the m
so the answer is
y=-1/2X + 5