Seven line segments are shown on the coordinate plane

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.

The map shows the location of the airport and a warehouse in a city. though not displayed on the map, there is also a factory 112 miles due north of the warehouse.a truck traveled from the warehouse to the airport and then to the factory. what is the total number of miles the truck traveled?

What is the period of the sinusoidal function ?