PLEASE HELP!!!!!
I NEED IT DONE BY 11:59 PM AND IT'S 11:10 PM

Answer:
Amount (A) = 40x + 30
Step-by-step explanation:
(a ) let x be the hours, then the amount (A) he earned is
(b ) A = 40x + 30
check : A = (40 × 3 ) + 30 = 120 + 30 = 150 ← amount given