-C... I just saw it on Quizlet
Pi is just 3.14--- math questions will most likely ask you to round to the nearest tenth or something of the sort -
Quadratic formulat is used when
a^2+bx+c=0
x=

4m^2+3m-1=0
a=4
b=3
c=-1
input
x=

x=

x=

x=

x=

or

x=-1 or 1/4
Step-by-step explanation:
the answer is in the above image