Given: 2x^2 = 5x + 3
Find f(3)

18 = 18

Step-by-step explanation:

f(3) =

2(3)^2 = 5(3) + 3

2 × 9 = 15 + 3

18 = 18

18=18

plug 3 into the x of the equation

44) $33.20 / 8 hour shift = $4.15 an hour
45) $33.90 / 6 hour shift = $5.65 an hour
46) $4.76h = $121.38 
divide 4.76 on both sides
h = 25.5 (That person will need to work for 25.5 hours to earn $121.38)
47) $6.78h = $257.64
divide 6.78 on both sides 
h = 38 (That person will need to work for 38 hours to earn $257.64)