1)A rectangular room is times as long as it is wide, and its perimeter is meters. Find the dimension of the room.

2)The sales tax rate for a local county is 8.1%. If an item costs $453 (before tax), how much sales tax will be due?

3)A baseball card increases in value according to the function,b(t)=5/2t+100 , where b gives the value of the card in dollars and t is the time (in years) since the card was purchased. Which of the following describe what 5/2 conveys about the situation?

I. The card's value increases by $5 every two years.
II. Every year the card's value is 2.5 times greater than the previous year.
III. The card's value increases by dollars every year.

4)Find an equation of the line that (a) has the same y-intercept as the line y=-8x+1=0 and (b) is parallel to the line 11x+4y=-3 .

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