**Answer:**

=0.5

**Step-by-step explanation:**

9c + 7 = 4(5c+3)

9c + 7 =20c + 12

-12 + 7 = 20 - 9c

-5 = 11c

-5 divide by 11 = -0.5

**Answer:**

Fish

**Step-by-step explanation:**

i ate the fish

The answer to number one is 276

Step 1: subtract

156 - 18 = 138

Step 2: multiply

138 x 2 = 276

Step 3: Your Answer

276

Bill has 145 air planes

Dave has 145 air planes

Jack has 138 air planes

**Answer:**

i dont know

**Step-by-step explanation:**

**Answer:**

$35

**Step-by-step explanation:**

To get to this conclusion it might help to draw out a table. So we must first subtract $235 for $130 to get the numerator for our rate of change which would be 105. Let's lock that into our numerator spot. Next we would have to subtract the hours from each other. So it would be 5 hours - 2 hours which would equal 3 hours. Now that we have our rate of change fraction all we would have to do is simplify it. So $105 over/divided by 3 hours equals a rate of change of $35.