Error analysis Student 1

3x +4 = 25
3x+4+ (-4) = 25 + (-4)
3× ÷ 3 = 21÷ 3
x - 7

Student 2

× ÷ 4 - 5 = 7
× ÷ 4 - 5 + (-5) = 7 + (-5)
4• × ÷ 4 = 2• 4
x= 8

Student 3

51 = -15z + 6
51+ (-6) = -15z + 6 + (-6)
45÷ -15 = -15z ÷ -15
z= -3​

A50% increase followed by 33 1/2% decrease

Campus rentals rents 2 and 3 bedrooms apartments for $700 ans $900 a month respectively. last month they had six vacant apartments and reported $4600 in lost rent. how many of each type of apartment were vacant?

Dean and karlene get paid to write songs. dean is paid a one-time fee of $20 plus $80 per day. karlene is paid a one-time fee of $25 plus $100 per day. write an expression to represent how much a producer will pay to hire both to work the same number of days on a song.