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.

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.

a triangular prism is a 3 dimensional shape composed of triangles and rectangles. it is made from two triangular bases and three rectangular sides.