Which of the following equations is equivalent to 2 – 9 (2x – 1) = 3?
i. 2 – 18x – 9 = 3
ii. 2 – 18x + 9 = 3
iii. 2 + 18x + 9 = 3
iv. - 2 (9x – 5) = 3
v. - 2 (9x + 5) = 3
A) Ii
B) I
C) Iii
D) Iv
E) V
A) Ii
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Expand and simplify the given expression by use of the binomial formula.(3x + 1)4
A. 81x3 + 108x2 + 54x + 12 B. 81x3 + 108x2 + 12x - 1 C. 81x4 + 108x3 + 54x2 + 12x - 1 D. 81x4 + 108x3 + 54x2 + 12x + 1
Find the x- and y-intercepts of f.f(x) = 3x - x3
A. x-intercepts: 0, -3; y-intercept: 3
B. x-intercepts: 0, 
, -
; y-intercept: 3
C. x-intercepts: 0, 
, -
; y-intercept: 0
D. x-intercepts: 0, -3; y-intercept: 0
An account contains A dollars and increases or decreases by R%. For A and R: (a) Find the increase or decrease in the value of the account. (b) Find the value of the account. (c) By what factor did the account value increase or decrease? A = $200, R = 180%
A. (a) $385; (b) $585; (c) 3.8 B. (a) $370; (b) $570; (c) 1.3 C. (a) $360; (b) $560; (c) 2.8 D. (a) $310; (b) $510; (c) 1.8
Subtract:
