A roast chicken with a base price of $6.89 is marked up by 21%. What is the new price, to the nearest cent?a.$12.33b.$9.97c.$8.34d.$7.10

6.89(1.21) = 8.3369 rounds to 8.34 <==

or u could also do it this way...
6.89 + 0.21(6.89) = 6.89 + 1.4469 = 8.3369 rounds to 8.34 <==