The sequence is arithmetic as it goes down 3 every time
Arithmetic nth term formula is an=a1+d(n-1)
an=7-3(n-1)
an=7-3n+3
an=-3n+10
To find the 100th term substitute n for 100
a100=-3(100)+10
a100=-300+10
a100=-290
The 100th term is -290
1 switch sides
(x-4)=0
add four to both sides
x-4+4 = 0+4
simplify
x = 4
In math
"of" means x
"is" means =
x% of 200 is 90
x * 200 = 90
x = 90/200 = .45
Multiply by 100 to convert to percent
.45 = 45%
90 is 45% of 200
The answer is 23 horses, there are 27 chickens
h(4)+c(2)=146
x+y=50
