PLEASE HELP - ASAP Due soon !

Explain the error that was made and how you solve sit correctly . Identify the correct answer in the equation below . Which was the incorrect step ?

Step 1: 8x-7>17+12x
Step 2: -4x-7>17
Step 3: -4x>24
Step 4: x>-6

Explain the error :
Correct Answer :

The first-serve percentage of a tennis player in a match is normally distributed with a standard deviation of 4.3%. if a sample of 15 random matches of the player is taken, the mean first-serve percentage is found to be 26.4%. what is the margin of error of the sample mean? a. 0.086% b. 0.533% c. 1.11% d. 2.22%

Your company withheld $4,463 from your paycheck for taxes. you received a $713 tax refund. select the best answer round to the nearest 100 to estimate how much you paid in taxes.

Olive's solar powered scooter travels at a rate of 30 miles per hour. what equation can she use to calculate her distance with relation to the time she traveled? h=hours m=miles 1. h=m+30 2. m=30h 3. m=h+30 4. h=30m