the answer is 32. all you have to do is plug in the numbers for what the letters say they indicate so r=4 so you would plug in 4 where the r is and then plus 6 where the b is and then because b and d are right next to each other, that means you need to multiply so plug in 5 for d and then multiply those together, your equation should end up looking like this
√4 + 6(5)
