Question

What is the solution set of the equation
−
3
t
2
+
210
t
=
0
?



A.
{
70
}

B.
{
−
70
}

C.
{
0
,
70
}

D.
{
−
70
,
0
}

Answer 1

Factor: -3t^2 + 210t = -3t(t - 70) = 0.
So t = 0 or t = 70.

Answer: C. {0, 70}