**Answer:**

Option B. (0.7)n = 45.50

**Step-by-step explanation:**

If n represents the number of dollars she raised this year then as per question the equation will be (7/10)n = 45.50

(0.7)n = 45.50

Therefore option B. 45.50 = 0.7n is the answer.

**Answer:**

It is a quadrilateral.

**Step-by-step explanation:**

Quadrilateral is a 4-sided shape where the total angles is 360°.

So when you add up all the angles, you will get 360°.

Let's solve your equation step-by-step.

4x−2=0

Step 1: Add 2 to both sides.

4x−2+2=0+2

4x=2

Step 2: Divide both sides by 4.

4x

4

=

2

4

x=

1

2

Answer:

x=

1

2

hope it helps

-- Driving at 30 mph for 20 minutes (1/3 hour), you cover 10 miles.

-- Walking at 3 mph for 10 minutes (1/6 hour), you cover 0.5 mile.

-- Average speed = (total distance covered) / (time to cover the distance)

= (10.5 miles) / ( 1/2 hour)

= ** 21 miles per hour. **

4 + 3 * (7 - 2)

4 + 3 * 5

4 + 15

19 <==