A plumber charges 130 to start job plus 56 per hour . How many hours did she work if the total bill is 214

The plumber worked for 1.5 hours

Step-by-step explanation:

y = 130 + 56x

Substitute 214 for y in the equation

214 = 130 + 56x

-130   -130                      Subtract 130 from both sides

84 = 56x                         Divide both sides by 56

1.5 = x

Step-by-step explanation:

Make an equation. Note key words like "plus", "per" and "total"

where is the total hours worked. Solve for :

Subtract 130 from both sides and simplify

Divide both sides by 56 to isolate the variable

The plumber worked for an hour and a half.

Done.

step-by-step explanation:

problem:

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

f(5/2) = 10/3

i hope this !