The range is the maximum subtracted from the minimum so it's 90-12 which equals 78
I’m pretty sure the answer is 3
Answer:

Step-by-step explanation:
Remove perfect squares from under the radicals.

_____
The applicable rules of exponents are ...
(x^a)(x^b) = x^(a+b)
√(a^2) = a . . . . . . . for a > 0
(√a)(√b) = √(ab)
2 x 10^2 because 2 x 10^2 is 200 in standard form and 200 is greater than 1.
Answer: B 35/4
Step-by-step explanation: