How many days does it take until hybrid heater has the lowest total cost? (Your answer should be a whole number of days.)
A household's hot water heater has broken and they can choose to replace it with an electric or a hybrid solar-electric model. The electric model costs $1,400 to install and $2.8 per day in electricity costs there-after. The hybrid model costs $3,400 to install and $1.2 per day in electricity costs there-after.
How many days does it take until hybrid heater has the lowest total cost?
(Your answer should be a whole number of days.)
Here given A household's hot water heater has broken and they can choose to replace it with an electric or a hybrid solar-electric model.
The electric model costs $1,400 to install and $2.8 per day in electricity costs there-after.
The hybrid model costs $3,400 to install and $1.2 per day in electricity costs there-after
Here we get two equation for total cost of each model
And then equavet both equation .
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