{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Quiz21solutions

# Quiz21solutions - MAC1105 Quiz#21 Solutions In the...

This preview shows page 1. Sign up to view the full content.

This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: MAC1105: Quiz #21 Solutions July 26, 2010 In the top-right corner of a clean sheet of paper, write your name, UFID, and section number. Please use a pen with blue or black ink. When you are nished, FOLD your paper in half lengthwise and write your name on the back. 1. Solve: (a) 2 = 1 4x 1 1 = ( 2 )-2x 1 = -2x x = - 2 . 1 2 = 4x 1 2 = 22x 1 2 (b) 5x = 8 3x = 8 x = 3 . 1 25x-4 5x = 25-(x-4) 5x = 5-2(x-4) x = -2x + 8 2. Sketch a graph of the function f (x) = -ex-2 + 3 There are three transformations: Shift right by 2, reection about the x axis, and shift up by 3. 3. Find the present value of \$20,000 after 20 years if the interest rate, compounded continuously, is 5%. Use A = P e-rt , with P = 20000, r = 0.05, and t = 20: A = 20000e-0.0520 = 20000e-1 = 20000 7357. e 1 ...
View Full Document

{[ snackBarMessage ]}