Roxanne buys an apple tart during the sale. If the original price was $20, how much does Roxanne pay?
Sale! 25% OFF
of the original price!

65 8 7 4 5 6 8 4 3 2 1 9 5 6 4 2 1 6 5 1 5 1 3 2 3 5 multiply the third number in the first row by the seventh number in the third row. add this result to the fifth number in the second row. add to this total ten times the fourth number in the third row. subtract the eighth number in the first row from the result.

If 1/√5+1/√5+1=p+q√r , find the values of p, q and r

Combine like terms to make a simpler expression 3z+z