grew aleoyl was Emirates National Schools Unit 2: Continuity Summative 1 Name Date ID 7) [DOK 4]The number grade 8 students who arrived at ENS School for Boys on a Monday morning between 7:30 AM and 7:40 AM is modelled by the function A(r)=109'2" where A(t] is the number of grade 8 students who have arrived and I is the number of minutes since 7:30 AM when t: 0. a. How many grade 3 students were at school at 7:30 AM, when r= 0'? [1 mark] b. Calculate the value of A'(5) and explain the meaning of your answer in the context of this problem. [4 marks] c. In one sentence, what would you recommend to ensure that more grade 8 students arrive at school by 7:30 AM? [1 mark]