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Math

Math Snap

PROBLEM

A plumber charges $80 plus $25 per hour. If the bill is $160, which equation represents this?
1. 80h+25=16080 h + 25 = 160
2. 80+25h=16080 + 25 h = 160
3. 80(h+25)=16080(h + 25) = 160
4. 25(h+80)=16025(h + 80) = 160

STEP 1

Assumptions1. The plumber charges a fixed service charge of $80.
. The plumber also charges $25 per hour of work.
3. The total bill for a repair is $160.
4. The variable hh represents the number of hours the plumber worked.

STEP 2

We need to form an equation that represents the total charges. The total charges are made up of the fixed service charge and the hourly charges.Total charges=Service charge+Hourly chargesTotal\, charges = Service\, charge + Hourly\, charges

STEP 3

Now, plug in the given values for the service charge and hourly charges to form the equation. The hourly charges are calculated by multiplying the rate per hour (25)bythenumberofhours(25) by the number of hours (h$).
Total\, charges = \($\)80 + \($\)25h

SOLUTION

We know that the total charges amount to 160.Therefore,wecansetourequationequalto160. Therefore, we can set our equation equal to 160$.
\($\)80 + \($\)25h = \($\)160So, the equation that represents the charges is 80+25h=16080 +25h =160.

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