Answer:
PERIMETER=Y+2Y+11+-3Y-9+Y^2+5Y-1+6Y^2
=7Y^2+4Y+1
First find x:
3x + 41 + x + x-8 + 2 = 100
Simplify :
5x + 35 = 100
Subtract 35 from both sides:
5x = 65
Divide both sides by 5:
X = 13
Total British stamps = x + x-8 = 13 + 13-8 = 18
Probability of being British = 18/100 = 9/50 as a fraction.
Based on the table, it should be 2.
Y=4x+2 works for all x and y values in the table.
Choose number 2, it is divisible by 2,

but it is not divisible by 4, because

but

.
So 72 pencils and 24 calculators
so greates number of identical calculators
this means
what is the biggest number that we can divide 72 and 24 by and get a whole number
this is called the GCM or greatest common multipule
to find the GCM, you factor 72 and group the like ones
72=2 times 2 times 2 times 3 times 3
24=2 times 2 times 2 times 3
so the common group is 2 times 2 times 2 times 3 or 24
so the greates number of packs is 24
so pencils
72 divided by 24=72/24=3
3 pencils per pack
24 divided by 24=24/24=1
1 calulator per pack
answer is 3 pencils and 1 calculator per pack