79.881 hope this helps
i might be wrong
Step-by-step explanation:

You need to substitute 9 with every x value in the equation.
So, 3(9)^2-7(9)+11
p(x)= 191
Answer:
j = 17.32 sq rt 3 or 30
Step-by-step explanation:
sin 60 = j/20sq rt 3
0.8660 = j/20sq rt 3
j = 17.32 sq rt 3