Use a line of best fit with a decimal slope

Put the value of x into the equation of the line of best fit.

1. A line of best fit for shoe size (x) and height (y) is y = 0.8x + 30. Use it to predict y when x = 12.
2. A line of best fit for hours of sleep (x) and minutes to fall asleep (y) is y = 5.9x + 15. Use it to predict y when x = 12.
3. A line of best fit for hours of sleep (x) and minutes to fall asleep (y) is y = 4.5x + 23. Use it to predict y when x = 2.
4. A line of best fit for hours of sleep (x) and minutes to fall asleep (y) is y = 6.2x + 29. Use it to predict y when x = 11.
5. A line of best fit for shoe size (x) and height (y) is y = 6.9x + 60. Use it to predict y when x = 5.
6. A line of best fit for age of a car (x) and its price (y) is y = 3.2x + 35. Use it to predict y when x = 5.
7. A line of best fit for hours studied (x) and test score (y) is y = 10.2x + 22. Use it to predict y when x = 4.
8. A line of best fit for temperature (x) and ice creams sold (y) is y = 2.7x + 53. Use it to predict y when x = 14.
9. A line of best fit for hours of sleep (x) and minutes to fall asleep (y) is y = 9.6x + 74. Use it to predict y when x = 8.
10. A line of best fit for shoe size (x) and height (y) is y = 7.5x + 42. Use it to predict y when x = 17.
11. A line of best fit for hours studied (x) and test score (y) is y = 10.7x + 16. Use it to predict y when x = 18.
12. A line of best fit for shoe size (x) and height (y) is y = 0.6x + 47. Use it to predict y when x = 6.
13. A line of best fit for hours of sleep (x) and minutes to fall asleep (y) is y = 5.8x + 11. Use it to predict y when x = 12.
14. A line of best fit for age of a car (x) and its price (y) is y = 19.9x + 62. Use it to predict y when x = 17.
15. A line of best fit for temperature (x) and ice creams sold (y) is y = 10.3x + 89. Use it to predict y when x = 21.
16. A line of best fit for shoe size (x) and height (y) is y = 15.6x + 44. Use it to predict y when x = 17.
17. A line of best fit for shoe size (x) and height (y) is y = 11.7x + 40. Use it to predict y when x = 3.
18. A line of best fit for temperature (x) and ice creams sold (y) is y = 20.8x + 111. Use it to predict y when x = 7.
19. A line of best fit for shoe size (x) and height (y) is y = 1x + 114. Use it to predict y when x = 8.
20. A line of best fit for hours of sleep (x) and minutes to fall asleep (y) is y = 27x + 113. Use it to predict y when x = 18.