Describe what happens to the coordinates of a figure when it is reflected over the x axis in a coordinate plane

If a 36 inch yardstick casts a 21 foot shadow, how tall is a building whose shadow is 168 feet? what is the scale factor

Simplify the expression below -3(10x+4y)+6(6x-2y)

Alexandra drove from michigan to colorado to visit her friend. the speed limit on the highway is 70 miles per hour. if alexandra's combined driving time for the trip was 14 hours how many miles did alejandra drive?