Assume That the Profit P Made When T $t > 0$

Multiple Choice

Assume that the profit P made when t units are sold, $t > 0$ is given by $P ( t ) = t ^ { 2 } - 28 t + 180$ For what values of t will there be a loss (that is, $\mathrm { P } < 0 \}$ ?

A) t=10 or t=18
B) $0 < \mathrm { t } < 10 \text { or } \mathrm { t } > 18$
C) $10 < t < 18$
D) $t > 0$