Answer:
A is f(t)=-(t-4)^2+50
B is 50. the top of the graph is at 50
C is at 4. that is the x value when y=50
If you need the graph put the answer from question A into Desmos
Answer:
- 
Step-by-step explanation:
Given
← cancel sec x on numerator/ denominator
= 
= - 
Answer:

Step-by-step explanation:
Let s be the number of students in each of 6 buses. Then there are 6s students in all buses.
Five of the students ride in a van. In total, in a van and in buses there are
students.
There are 221 students on a filed trip. So,

Answer:
it is proportional
Step-by-step explanation:
constant of proportionality= 4
equation: b=4c
Answer:
haha
Step-by-step explanation: