Answer:
a. 6, b. 99, c. 63
Step-by-step explanation:
A) The function s(t) is in the vertex form. The standard vertex form is a(x-h)+k where the vertex is (h,k). The vertex is the highest (or lowest in some cases) point of the graph, so if we use s(t) to get the vertex we get that h=6 and k=99. This means that for a student to get a perfect score they need to study 6 hours
B) We can just take the k value from the first question because that's the highest value for s(t), so the highest score will be 99
C) For this one just plug in 0 for time, so -(0-6)^2+99. This equals -(-6)^2+99, which equals 99-36 =63
Answer:
Im not rally sure but maybe 5.71 , here is my explanation :
Step-by-step explanation:
Tan 55 =x/4
tan 55 = 1/42814
1/42814 = x /4
×=5.712592027 .
The answers are C and also D
D, because tutoring and receptionist is UPTO 20 hours and the money is AT LEAST 200
