Sam is building a model if an antique car the scale of his model to the actual car is 1: 10 his model is 18 1/2 how long is the actual car

What is the the greatest common factor ?

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!

Write the point-slope form of an equation of the line through the points (-2, -3) and (-7, 4).