Hello :
<span>the general term equation, an, for the arithmetic sequence is :
An = A1+d(n-1)
A1 : the first term and : d the common diference
in this exercice :
A1 = 9
d =(-3)-(1) =(1)-(5) =(5) -(9) = -4
An = 9-4(n-1)
An = -4n +13</span>
Distance = speed x time
time = distance/speed
= 340/85
= 4h
Here we will use exponential form, which is

Initial value, y0 = 500
Double of 500 = 1000



Required equation is

Answer:
x = 4
Step-by-step explanation:
5.2cm/1.3cm = 4 so it increased/decreased by 4
16cm/4 = 4cm
Domain x = no solution
Minimum (-8,7)
Vertical intercept (0,71)