A lightbulb consumes 1440 watt-hours Per day how many watt-hours does it consume in three days and 12 hours?

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

Acoin bank containing only dimes and quarters has 12 more dimes than quarters. the total value of the coins is $11. how many quarters and dimes are in the coin bank?

Two cyclists 84 miles apart start riding toward each other at the same. one cycles 2 times as fast as the other. if they meet 4 hours later, what is the speed (in mi/h) of the faster cyclist?