During weekdays, Richard is working as a part-time library assistant at a university. He needs to work for a total of 30 hours a week. For the first three days of the week, he worked 2115

Question

During weekdays, Richard is working as a part-time library assistant at a university. He needs to work for a total of 30 hours a week. For the first three days of the week, he worked  2115
  hours. Complete the working equation that represents the number of hours,  h
 , Richard needs to work to reach 30 hours for the week and solve the equation.(1 point)
h + 2115 =

h =
 
 hours

GPT-4o mini · Answer

To find the number of hours $ h $ that Richard needs to work to reach a total of 30 hours for the week, you can set up the equation: $$ h + 21.15 = 30 $$ Next, we need to isolate $ h $ by subtracting 21.15 from both sides of the equation: $$ h = 30 - 21.15 $$ Now, calculate the right side: $$ h = 30 - 21.15 = 8.85 $$ So, the complete working equation and solution is: $$ h + 21.15 = 30 $$ $$ h = 8.85 \text{ hours} $$ Richard needs to work **8.85 hours** to reach a total of 30 hours for the week.