The ratio of boys at camp to girls is 8: 7 the total is 195 how many boys camper to girl campers

8:7 means there are 15 parts so divide 195 by 15

195/15 = 13, this means that each part is 13

8 x 13 = 104

7 x 13 = 91

so 104:91

there are 104 boy campers to 91 girl campers

that would be 91 (if i am corrected)

The answer is B. (x - 9)(x + 4)
To factorise quadratic expressions, you first need to find factors of the end number, in this case 36, that have a difference of the middle number, which is 5. The two factors in this expression are 4 and 9, because 9 - 4 = 5. As for the signs, you know by the end sign that they are different, and the middle sign means that the biggest number is negative, which gives you your (x - 9)(x + 4)

I hope this helps!