Which equation(s) have an amplitude of 1/2?

A.3 & 7
B.1, 4, 6, & 7
C.2 & 5
D.2, 3, 5, and 8

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

The area of square garden is 300m squared. how long is the diagonal?

Meghan has created a diagram of her city with her house, school, store, and gym identified. a. how far is it from the gym to the store? b. meghan also wants to walk to get some exercise, rather than going to the gym. she decides to walk along arc ab. how far will she walk? round to 3 decimal places.