Answer:
$17,280
Step-by-step explanation:
The model for profit (y), in thousands of dollars, as a function of time (x), in years after 1970 is:
[tex]y=0.66x +12[/tex]
The corresponding value of x in 1978 is:
[tex]x= 1978-1970\\x=8[/tex]
Estimating the profit (in thousands of dollars) in 1978:
[tex]y(8)=0.66*8 +12\\y(8) = 17.28[/tex]
Converting it to dollars:
[tex]P = \$1,000*y(8)= \$1,000*17.28\\P= \$17,280[/tex]
The estimated profit in 1978 is $17,280.