Substitute values into a formula
A car park charges an entry fee and an hourly charge
\(C\) is the charge in dollars and \(h\) is the parking time in hours
\[C = 4 + 4h\]
\[h = 4\]
A car park charges an entry fee and an hourly charge
\(C\) is the charge in dollars and \(h\) is the parking time in hours