A banner company sells 5-foot banners to retailers for x dollars. The St. James Sign Shop marks them up 90%. Express the retail price at the St. James store algebraically.

$1.9x

Step-by-step explanation:

Given that :

Cost of banner = x dollars

Markup percentage at st. James store = 90%

Retail price at st. James store :

Initial cost + markup

Cost of banner + 90% of cost

x + 0.9x

= 1.9x

Hence, retail.price at st. James store is $1.9x

sqrt 25

Step-by-step explanation

If you attempt to rationalize 25 you will get 5 times 5 which isn't a ration. Therefore, the sqrt of 25 is irrational.