In 2014, Sally used 5400 units of electricity. In 2015, the price of electricity increased by 8% but Sally reduced her usage to 4500 units.
Sally paid £680.40 for the units she used in 2015.
Did she pay more or less for the units she used in 2014? Show your working.

Please answer!!

What additional information could be used to prove abc =mqr using sas? check all that apply.

Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?

The coordinates r(1, -3), s(3, -1) t(5, -7) form what type of polygon? a right triangle an acute triangle an equilateral triangle an obtuse triangle