**Answer:**

**Step-by-step explanation:**

If you start with a 52 card deck which includes 4 sevens and remove a seven and another card, then the (number of sevens in the deck) is 3 and the (number of cards) is 50. So, in that specific case, assuming that the cards are arranged in a uniform random order, the answer would be 3/50.

**Answer:**

2x - 5

**Step-by-step explanation:**

Step 1: distribute the 1/5, or divide by 5

1/5 ( 10x-25)

2x - 5

Done

**Answer:**

3 hours 38 minutes is what calculators online say

**Step-by-step explanation:**

**Answer:**

**Step-by-step explanation:**

To find inverse you switch x and y and solve for y.

y = (9/2)x - 5

switching gives

x = (9/2)y - 5

x+5 = (9/2)y

(2/9)(x+5) = y