The rectangular prism has measures 6 units by 6 units by x units,
Thus, the volume is 6*6*x = 36x (units cubed)
The surface area of the prism is
2(x*6+x*6+6*6)=2(6x+6x+36)=2(12x+36)=24x +72 (units squared.
36x=24x +72
36x-24x=72
12x=72
x=72/12=6
Answer: x=6
And is C
Caitlin can eliminate $54 from Food/Clothes and $120 from Entertainment.
18 x 20 = 360
360 / 20 = 18
So 18 is the answer
Box 1 : 3 pencils + 7 pens = total of 10
probability of picking a pen is 7/10
box 2 : 3 pencils + 3 crayons = total of 6
probability of picking a crayon is 3/6 which reduces to 1/2
probability of picking both is (7/10 * 1/2) = 7/20 <==
So, what you would do is divide 3 by 8 to get the decimal. You wouldn't divide the 9 by anything because that would be put in front of it. the answer is 9.375
