A time$-$series trend equation is $25\mathrm{.}3+2\mathrm{.}1$ x$.$ What is your forecast for period $15?$

Question $4$Select one:

a$.$

$34\mathrm{.}4$

b$.$

$40\mathrm{.}0$

c$.$

$46\mathrm{.}3$

d$.$

$55\mathrm{.}3$

e$.$

$56\mathrm{.}8$