Reference no: EM13596935
1. At a local community college, it costs $350 to enroll in a morning section of an algebra course. Suppose that the variable n stands for the number of students who enroll. Then 350n stands for the total amount of money collected for this course. How much is collected if 42 students enroll? 79 students? 290?
Substitute to find a value of the expression
2. The area A of a triangle with base b and height h is given by A=1/2 bh. Find the area when b=28m (meters) and h= 30m
3. A driver who drives at a speed of r mph for t hr will travel a distance d mi given by d = rt mi. How far will a driver travel at a speed of 57 mph for 6 hr?
4. Translate to an algebraic expression. 13 less than d
5. Translate to an algebraic expression. The sum of m and n
6. Translate to an algebraic expression. 44 multiplied by d
7. Translate to an algebraic expression. Use x and y for any variables. The sum of four times a number plus 5 time another number.
8. Translate to an algebraic expression. The product of 46% and some number Type the percentage as a decimal. Use n to represent some number.
9. The peak of Aconcagua, a mountain in Argentina stands 22,834 feet above sea level. What is the integer that best expresses the given number? (type a negative number with a negative sign, or type a positive number with no sign.)
10. Graph the number on the number line 9/4
_|_____|______|______|_______|____|______|_____|____|_____|____|____|_____|_____
-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6
Use < or > to make the statement true
11. -12 _ 7
12. 2 _ 16
13. Add -66 +66 =
14. -5 + (-7) =
15. Find the opposite, or additive inverse of -100
16. Find -x when x= -70/59 (Simplify your answer, type a fraction)
17. In 1993 the elevation of an offshore well was -3430 ft. In 1998 a new well was 380 ft deeper. What was the elevation of the new well in 1998?
18. Kyles credit card bill is $391. Kyle sends a check to the company for $99, charges another 114 in merchandise and then pays odd another $258 of the bill. How much does Kyle owe?
19. -8-(-3) subtract
20. -6-0= solve
21. -0.31 - (-6) subtract
22. One day the temperature dropped from 0 F to -17 F. How many degrees did it drop?
23. A submarine at a depth of 2756 ft ascends to a depth of 628 ft. How far did the submarine ascend?
24. (-3)(5) multiply
25. (2)(56) multiply
26. (-1) to the third power (simplify your answer) Evaluate
27. Suppose there is a 2-degree drop in a temperature for every thousand feet that tan airplanes climbs into sky. If the temperature on the ground is 60 degrees, what would be the temperature when the plane reaches an altitude of 28,000 ft?
28. After diving 88 m below the sea level, a diver rises at a rate of 3 meters per minute for 9 min. Where is the diver in relation to the surface?
29. -45 / (-9) divide, if possible.
30. 0/-9.9 simplify (type n if there is no solution)
31. Find the reciprocal 8/7
32. Rewrite the division as a multiplication 4/80
33. (these are fractions) -2/17 divided by -9/17 (simplify your answer. Type a fraction. Type N if the answer is undefined.
34. Use multiplying 1 to find an expression equivalent to 11/7 (fraction) with s denominator of 49 d
35. Use a commutative law to fins an equivalent expression. Rs
36. 18(m + 4)
37. -7( p - 9)
38. Factor 4c + 12=
39. 10c - 13 c simplify your answer
40. Collect like terms. 16p + 14q +c12p =
41. These are fractions.. 39/13m + 3/13n - 20/13m + 8/13n (do not factor. Type coefficients as fractions)
42. -88r + 87s - 29 =
43. 7x + 8y - 6(7x - 6y + 2z)
44. 6 {[x - 4) + 18] - [3(5x - 3)+ 1]} = Simplify your answer
45. [ 54 divided by ( - 9)] divided by ( - 1/7 fraction) =
46. 15 . (-28)- 50
47. 2 to the second power + 74 . (64) - (4+1 . 8) =
48. -5 to the second power + 10 =
49. 7 x 10 to the 4th power - 4000 =