Answer: 
Step-by-step explanation:
Given: The total number of candies in the bowl = 10
The number of blue candies = 3
The probability to grab first candy he grab is blue is given by:-

Since, before the second candy drawn he put back the first ball in the bowl , therefore both the events of grabbing blue candy are independent.
The probability that both candies he grabs are blue is given by:-

Lets say the number of adult tickets is x. This means the number of student tickets is 2x. So, 2x + x = 285, or 3x =285. The means x = 95. So the number of adult tickets sold is 95.
Answer:
First, you can break 6 into 3 * 2.

Then, cancel out the common factor of
:

Next, cancel out the common factor of
.

You can evaluate it as 10125 if you'd like.
5 1/4 = 5.25 in decimal form. So,
-6 + 5.25 = -0.75
Hope I helped!
The expression for y in terms of "a" when value of x is doubled is 
<em><u>Solution:</u></em>
Given that,
y is directly proportional to 
Therefore,


Where "k" is the constant of proportionality
y = a for particular value of x
Therefore,
--------- eqn 1
We have to find when x is doubled
x is doubled means 2x
Let it be 
Hence we get,
--------- eqn 2
Substitute value of k from eqn 1, we get

Thus expression for y in terms of "a" when value of x is doubled is 