Answer:
where's the answer choices???
Step-by-step explanation:
If you're familiar with the quadratic equation

well,

is the x component of the vertex, in your case, the vertex is the highest point
figure out what t is at the highest point, and then substitute that back into the equation in order to determine height
x=t in this problem
A. sandwiches per hours is 4.5/hour
b. hours per sandwich is 0.33/sandwich
Answer:
Hello! May I ask what "Desmos" is??
Step-by-step explanation: