Answer:
B. Step 4 is incorrect , it should be 
Step-by-step explanation:
6x-1= -2x+9
Step 1
Collect like terms and change signs if you move anything from one side to the other; 6x+2x = 9+1
Step 2: Add like terms on both sides
8x = 10
Step 3: To remain with just x on one side, divide both sides by 8 and it becomes;

The two 8s cancel each other and you remain with 
134.4 miles, because 5/7 in decimal form is 1.4, divide 188.3/1.4 = 134.4 miles
Answer:
37.5
you need to convert 75 divided by 200 which will give you 37.5
Answer:
The sum of their ages is 1 less than 3 times Rosa's age.
15 + 8 = 3(8) - 1
Step-by-step explanation: