PLS HELP WILL MARK BRAINLIEST AND 30 POINTS!!

Chris and Denisha are electricians.
Chris uses c=50h+65 to calculate how much he charges (c) in dollars for h hours of work.
Denisha uses d=37.50h+75 to calculate how much she charges (d) in dollars for h hours of work.
How much do Chris and Denisha charge per hour of work??

Chris charges $____ per hour
Denisha charges $____ per hour

Thank you!!