PRE-CALCULUS

ALL WORK MUST BE COMPLETEDIN HANDWRITING. ALL WORK MUST BE ON PAPER IN HANDWRITING

COMPLETE PROBLEMS 1-40, 1-45, 1-46, 1-47, 1-48, 1-49, 1-50, 1-51.

1-40. The volume of an open-top rectangular box 15 4500 cc (cubic centimeters). The length of the rectangular base of the box is twice the width, What height will make the surface area as small as possible? 1-45. In problem 1-40, suppose that the box has a closed top. How would the solution to the problem change? Write new equations or explain what changes you would make to your method for solving the problem. You do not need to solve the problem Homework Help 1-46. Let f(z) = 222 3. Evaluate: Homework Help a f(3b) b fla+1) 1-47. Muluply the following binomials. Homework Help a (2= + 3)(2z 4 3) b. {z a)(z b) 1-48. Rewrite each expression below in simple radical form. Homework Help a 24 b. 3+/162z7 24/10 1-49. APAT is an isosceles right triangle with PA = TA Homework Help & a. Calculate the exact length of PA. Express your answer in simple radical form. b. What is the exact value of sin (P)? c. What is the exact value of cos(P)? 1-50. Solve for r: 1 = 5x + y -6 Homework Help &1-51. Though it looks like the following equations are true, each of them is actually false. Confirm this by substituting simple Note: This stoplight icon will appear numbers for the variables and doing the arithmetic. Note: Do not use 0 or 1; they are too special. REMEMBER: EACH periodically throughout the text. OF THESE STATEMENTS IS FALSE. Homework Help Problems with this icon display common errors that can be made. Be sure not to make the same mistakes yourself? a. (x+y) =x3+y b. vp+q=p+q c. 3w 2 = d. (a 1+6 1) -1 =a +b e. 3 . 2* = 67