What is 55 over 5 as a mixed number

Element x decays radioactively with a half life of 8 minutes. if there are 450 grams of element x, how long, to the nearest tenth of a minute, would it take the element to decay to 37 grams?

If abcde is reflected over the x-axis and then translated 3 units left, what are the new coordinates d? are he re

Asporting good store is offering 30 percent off of the original price(x) of football cleats. the discount will be reduced by an another $7 before sales tax.