123c test 4 review b

475 views
424 views

Published on

Published in: Technology, Health & Medicine
0 Comments
1 Like
Statistics
Notes
  • Be the first to comment

No Downloads
Views
Total views
475
On SlideShare
0
From Embeds
0
Number of Embeds
1
Actions
Shares
0
Downloads
8
Comments
0
Likes
1
Embeds 0
No embeds

No notes for slide

123c test 4 review b

  1. 1. Math 123c Test 4 Show all work. (10 pt. each)1. Solve log x(9) = –1/3 for x. .3. Solve log4 (5) – log4 (x –1) = 3 4. Solve 92x * 32x – 1 = 27 without a calculator.without the calculator.5. Draw the circle x 2 + y 2 – 6x + 8y = 9. Label the center and the highest, lowest, left most and right mostpoints.6. Draw the ellipse 4x2 – 16x + y2 + 4y = –4, find the center, draw the graph and label the highest, lowest, leftmost and right most points.7. Solve the following system of equations 3X + 2Y = 1 2X + 3Y = –18. Solve 2X + Y + 4Z = 11 X + 2Y + 2Z = 7 3X – 3Y –2Z = -49. We have 50 bills in $1’s, $5’s and $10’s. There are 4 more $10–bills than the $5–bills. Their total value is$346. How many of each do we have? (Set up a system of equations and solve the system)10. There’re three brand of fertilizers A, B, and C. Following is a table of the amount of nitrogen, phosphorus,and potassium in a box of each brand (in lb). How many boxes of each brand are needed in order to make amixture that contains 6 lb of nitrogen, 6 lb of phosphorus and 7 lb of potassium?Brand A B CN 1 2 2P 2 1 2K 2 2 111. Horizontal parabolas12. Hyperbolas

×