How can you solve an equation like this 8x-17 by its self

Which radical expression is a rational number? a. √ 360 b. √ 644 c. √ 225 d. √ 122

Megan is making bracelets to sell to earn money for the local animal shelter. it takes her 1/4 hour to pick out all the beads and 1/10 hour to string them. this week, she only has 5 1/4 hours to make bracelets. how many bracelets will megan be able to make?

If the figures below are similar give the scale factor of figure a to figure b