You can probably look up a answer key for that worksheet. ;)
L x w = 150+175t
=> l = (150+175t)/25
l = [25(6+7t)/25]
l = 6+7t
The expression of the length is l=6+7t
Estimated probability=number of outcomes in question/divided by total number of trials
ep=102/300
ep=51/150 (34%)
2/5 of the number 100 is 40 because 100÷5=20 that is 1/5 so just add 1/5 of 100, 20, to 20 and you will get 40. hope it helps
3 is what I think the answer would be. 3 + 1 is 4, 4 is not a prime number, 3 is prime.