Answer:
-3
Step-by-step explanation:
2x-1=4x+5
-1=2x+5
-6=2x
x=-3
Answer:
Step-by-step explanation:
16 units
Answer:
-63504
Step-by-step explanation:
Answer:
$3,000 0r $2,900
Step-by-step explanation:
nearest thousand
2,914
9>5 so you round up to
$3,000
nearest hundred
2,914
1<5 so you round down
$2,900
An=a1+d(n-1)
a1=first term
an=nth term
d=common differnce or how much it increases by each time
n=which one
so
originally 3 trees
a1=3
and after 19 years, 84 trees, so a19=84
a19=84=3+d(19-1)
84=3+d(18)
minus 3 both sides
81=18d
divide both sides by 18
4.5=d
an=3+4.5(n-1) or
an=4.5n-1.5
or
t(n)=3+4.5(n-1) or
t(n)=4.5n-1.5
