Simplify.
Rewrite the expression in the form 5^n

(5−8)(5−10)=??

Which shows the correct solution of the equation 1/2a+2/3b=50, when b=30?

On saturday a souvenir shop had 125 customers. sixty four percent of the costumers paid with a credit card. how many costumers paid with cash?

I'm at a bookstore with $\$35$ in my pocket and a $20\%$-off coupon. what is the cost of the most expensive book i can buy with my money and the coupon? (assume that there are books of every possible price in the bookstore. it's a large bookstore! )