7. -2[-6-(-53-88)] = simplify

10. 4>-2x+3 or 10<-5x+3

16. 80% of what number is 40?

17.In 1992, the life expectancy of males in a certain coutry was 69.3 years. In 1996, it was 72.8 years. Let E represent the life expectncy in year t and let t represent the number of years since 1992. The linear fuction E (t) that fits the data is E (t)= t+

Use the fuction to predict the life expectancy of males in 2004.

E (12)=

21. Graph the line containing the given pair of points and find the slope (3,1), (-2,-3)

Find the slope of the line m=

28. The equation y = -1777x+27,153 can be used to predict the number y of gun deaths in the United States x years after 2000, that is, x=0 corresponds to 2000, x=2 corresponds to 2002, x=4 corresponds to 2004, and so on. Predict the number of gun deaths in 2004 and 2008. In what year will the number of gun deaths be 9383?

The predicted gun deaths in 2004 will be

The predicted gun deaths in 2008 will be

The predicted number of gun deaths will be 9383 in the year

Translate to an algebric expression, the product of 38% and some number. The translation is ?

40. Graph the equation using the slope and the y-intercept y= 8/7x+2

41. Find the domain of the function p(x)=x-2x+2

42. Solve the following system of equations. x+2y=3 (1): x=4-2y (2)

43. Solve using the multiplication principle -7/8x=-9/10

46. solve by the elimination method 7r-6s=45

6r+7s=75

47. Soy bean meal is 14% protein, cornmeal is 7% protein. How many pounds of each should be mixed together in order to get 280-lb mixture that is 10protein? Hwo many pounds of the cornmeal should be in the mixture? How many pounds of the soybean meal should be in the mixture?

48. r+s/7 for r=22and s=20 Evaluate. r+s/7

49. solve -.01x<-6

50. The function H described by H (x)= 2.75x+71.48 can be used to predict the height, in centimeters, of a woman whose humerus is x cm long. Predict the height of a woman whose humerus is 40 cm long.

51. Decide whether the pair of lines is parallel, perpendicular, or neither. 3x+2y=10 and 3x+2y=8

52. Find the slope, if it exists, x-6 m=

53. Solve by the elimination method 3x+4y=5 6x+8y=10

54.f (x) = -6x-3

55. Solve by the substitution method. 3x+5y=33 x=68-8y

56. Graph the inequality on a plane. 2x+3y <6

54. Find the slope and the y- intercept

30. On three consecutive passes, a football team gains 5 yards, loss 30 yards, and gains 24 yards. What number represents the total net yardage? The total net yardage is .

8. 11u+3v-8u-6v collect like terms