Alvin is 6 years older than elga. the sum of their ages is 106 . what is elga's age?

Reflect the point (7,0) across the y-axis

The first week samantha learned to read braille, she could read 10 words per minute. in the second week she increased her speed by 20%. in the third week she increased her speed again by another 25%. how many words could she read per minute by the third week? hurry and tell me!

Look at the figure. classify the pair of angles 2 and 7