Problem $3-5($Algo$)$

A cosmetics manufacturer's marketing department has developed a linear trend equation that can be used to predict annual sales of its popular Hand & Foot Cream.

$F_t=60,000+16,000t$

Where

$F_t=$ Annual sales

$t$ is in years

$($Enter all answers as whole numbers.$)$

a$.$ Are annual sales increasing or decreasing? By how much?

Answer is complete but not entirely correct.

Annual sales

increasing

by

$456,000$

bottles per