slopeintercept2

1. A new FDA diet claims that a person weighing 140 pounds should consume 1560 daily calories and that a 180 pound person should consume 1700 calories. Let y represent the calories and x the weight of the person in pounds.

2. Beth owns her own candle making business. The cost to create and buy your own candle is $475. In addition to these one time charges, the cost of putting your own picture on the candle is $1.75. Let "x" equal the average cost per candle for Beth's business to make. Find the average cost per candle when x=100.

3. Company produced 45,000 tons of steel in March at a cost of 1,150,000. In April the company produced 35,000 tons at a cost of 950,000. using only those two data points, determine the cost function.

4. In 1995, the number of families with cable television was 20.0 million. By the year 2008, there will be 27.6 families with cable television and enjoying every minute of it. Find the slope and describe what the slope represents.

5. Mary invested $1400 in two mutual funds. One fund earned interest at 7% per year and the other earned interest at 8% per year. If she receives $104 in interest after one year, how much did she invest in each fund?

6.Mia has a temperature of 101 degrees. Her temperature is rising at the rate of 1 degree every 5 hours. If her temperature reaches 108 degrees, Mia's parents will take her to the emergency room. Write and solve an equation to determine how long it will be before Mia goes to the emergency room.

7. The linear equation y=30x describes how far from home Deena is as she drives from Dallas to Miama. Let x represent the number if hours and y represent the number of miles. How far from home Deena in 12 hours? Graph the equation and tell whether it is linear.