Kaylee owns a small business selling clothing. She knows that in the last week 3 customers paid cash, 21 customers used a debit card and 46 customers used a credit card. Based on these results, express the probability that the next customer will pay with a debit card as a decimal to the nearest hundredth.
The total number of customers is 3 (cash) + 21 (debit card) + 46 (credit card) = 70 customers.
The probability that the next customer will pay with a debit card is 21 (customers paying with debit card) / 70 (total customers) = 0.30.
Therefore, the probability of the next customer paying with a debit card as a decimal to the nearest hundredth is 0.30.