Which vectors represent the reflection of the vector <3,-7> across the x-axis [-3, 7]
<-3,7>
[3, 7]
[7, -3]
<3,7>
<7,-3>

Need solving this second acceleration problem.

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?

Find the volume of the solid whose base is the region bounded by f(x), g(x) and the x-axis on the interval [0, 1], and whose cross-sections perpendicular to the y-axis are squares. your work must show the integral, but you may use your calculator to evaluate it. give 3 decimal places for your answe