Multiply using the galley method.23 × 97
A. 2241
B. 2221
C. 2231
D. 2331
Answer: C
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Determine whether the polynomial is a perfect square trinomial, a difference of squares, or neither.16x2 - 80x + 100
A. Difference of squares B. Perfect square trinomial C. Neither
Use the properties of parallel lines to solve the problem.In the figure, 
. m?ABC = 45°. Given this information, find the measures of as many other angles as possible. 
A. m?ADE = m?ACB = m?AED = 45° , m?DBC = m?ECB = 135° B. m?ADE = m?ACB = m?AED = 45° C. m?ADE = 45°, m?DBC = 135° D. m?ADE = 45° , m?DBC = m?ECB = 135°
Simplify the radical expression. Assume all variables represent positive real numbers.
A. -3 B. 81 C. 3 D. not a real number
Determine the slope and y-intercept of the function.f(x) = 
x - 3
A. m = - 
; b = 3
B. m = 4; b = 3
C. m = - 3; b = 
D. m = 
; b = - 3