How do i do this problem 0.25(x+4)-3=28

Need to increase the numbers of customers i talk to daily by 20% how many customers do i need to talk to if i talk to a average of 8 customers per hour during an 8 hour shift

You earn a 12% commission for every car you sell. how much is your commission if you sell a $23,000 car?

Two years ago a man was six times as old as his daughter. in 18 years he will be twice as old as his daughter. determine their present ages.