[table][tr][td][math]\frac{1}{2}x=-50[/math][/td][td][/td][td][math]-60t=30[/math][/td][/tr][tr][td][/td][td][/td][td][/td][/tr][tr][td][math]x+90=-100[/math][/td][td][/td][td][math]-0.01=-0.001x[/math][/td][/tr][/table]
[size=150]Given that the drain empties the tank at a constant rate of 14 liters per minute, complete the table:[/size]
If the sensor started working 15 minutes into the tank draining, how much was in the tank to begin with?
[size=150]A utility company charges $0.12 per kilowatt-hour for energy a customer uses. They give a credit of $0.025 for every kilowatt-hour of electricity a customer with a solar panel generates that they don't use themselves.[br][br]A customer has a charge of $82.04 and a credit of -$4.10 on this month's bill.[/size][br][br][size=100]What is the amount due this month?[/size]
How many kilowatt-hours did they use?
How many kilowatt-hours did they generate that they didn't use themselves?
[size=150][size=100]Find the value of the expression [i]without [/i]a calculator.[/size][/size][br][br][math]\left(2\right)\left(-30\right)+\left(-3\right)\left(-20\right)+\left(-6\right)\left(-10\right)-\left(2\right)\left(3\right)\left(10\right)[/math]
[size=150][size=100]Write an expression that uses addition, subtraction, multiplication, and division and only negative numbers that has the same value as your answer above.[/size][/size]