Lisa can paint a wall in four hours. Sissi needs eight hours to paint the wall. How long will it take if they are helped?

Yoku is putting on sunscreen. he uses 2\text{ ml}2 ml to cover 50\text{ cm}^250 cm 2 of his skin. he wants to know how many milliliters of sunscreen (c)(c) he needs to cover 325\text{ cm}^2325 cm 2 of his skin. how many milliliters of sunscreen does yoku need to cover 325 \text{ cm}^2325 cm 2 of his skin?

Which of the following is the true for f(x) = 5cos

School has 204 sixth grade students. if the sixth grade is 30% of the total school, how many students are in the middle school?