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
Answer:
x=4
DE=33
CD=11
Step-by-step explanation:
Monday and Tuesday are the correct answers due to the negative number being lower than -1.75 F