Valeria walks 1.5 meters per second

How many different ways can you make change for $.50 using only nickels,dimes, and quarters?

Δabc is dilated by a scale factor of 3 with the origin as the center of dilation to form δa′b′c′. the slope of is -1.2. the length of is p units, the length of is q units, and the length of is r units. the slope of is . the length of is units.

How is working backward similar to solving an equation?