**Answer:**

P(B)= 0.305

**Step-by-step explanation:**

Hello!

This exercise is an application of conditional probabilities.

You know that the definition of a conditional probability is:

And

The probability of A occuring, given that B has already ocurred is P(A/B)= 0.61

The probability of A and B ocurring at the same time is P(A∩B)= 0.5

You can clear the probability of B from the equation:

P(B)= P(A/B)*P(A∩B)= 0.61*0.5= 0.305

I hope you have a SUPER day!

**Answer:**

C

**Step-by-step explanation:**

2x + 3(x - 10) = 45

2x + 3x - 30 = 45

5x - 30 = 45

5x = 75

**x = 15**

**Answer:**

I think it's 145.225 sq in.

**Step-by-step explanation:**

2.5 x 2 x 3.14 = 15.7

15.7 x 9.25 = 145.225

**Answer:**

35

**Step-by-step explanation:**

Substitute 13 for x

f(13) = 2 (13) -1

= 36 -1

= 35

Answer: sometimes u have to download an app

Step-by-step explanation: