Aherd of zebra currently has 45 members. based on the available resources, biologists estimate that the size of the herd will increase at a rate of 7% per year. which of the following graphs models this relationship, if the x-axis represents years and the y-axis represents number of zebra?

It is saturday morning and jeremy has discovered he has a leak coming from the water heater in his attic. since plumbers charge extra to come out on the weekends, jeremy is planning to use buckets to catch the dripping water. he places a bucket under the drip and steps outside to walk the dog. in half an hour the bucket is 1/5 of the way full. what is the rate at which the water is leaking per hour?

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.