SOLUTION: Hello professor. I'm having trouble with linear function problems. Suppose the sales of a particular brand of appliance satisfy the linear model y=90x + 3400, where "y" represent

Question 658723: Hello professor. I'm having trouble with linear function problems.
Suppose the sales of a particular brand of appliance satisfy the linear model y=90x + 3400, where "y" represents the number of sales in year "x", with x= 0 corresponding to 1982. Find the number of sales in 1990.
(A) 4120 (B) 8150 (C) 8240 (D) 4030
Thank you!!!
Answer by Earlsdon(6294) (Show Source): You can put this solution on YOUR website!
The key here is to find the value of x.
If x=0 corresponds to 1982, 1990 is 1982+8 so x = 8 for 1990. Substitute x=8 into the given equation.
y = 90(8)+3400 Evaluate.
y = 720+3400 Add.
y = 4120
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