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• which statement correctly describes the relationship between the energy of a wave and the wave’s amplitude? high energy waves have high amplitudes. low energy waves have high amplitudes. high and low energy waves have the same amplitudes.
  
• which exponential functions have been simplified correctly? check all that apply. f (x) = 5 rootindex 3 startroot 16 endroot superscript x baseline = 5 (2 rootindex 3 startroot 2 endroot) superscript xf (x) = 2.3 (8) superscript one-half x baseline = 2.3 (4) superscript xf (x) = 81 superscript startfraction x over 4 endfraction baseline = 3 superscript xf (x) = three-fourths startroot 27 endroot superscript x baseline = three-fourths (3 startroot 3 endroot) superscript xf (x) = (24) superscript one-third x baseline = 2 (rootindex 3 startroot 3 endroot) superscript x
  
• what are federal sources of revenue? select four options. income tax corporate tax payroll tax sales tax excise tax
  
• what expression represents the volume of the cone, in cubic units? πx3 πx2 2πx3 4πx3
  
• factor the polynomial 4x4 – 20x2 – 3x2 + 15 by grouping. what is the resulting expression? (4x2 + 3)(x2 – 5) (4x2 – 3)(x2 – 5) (4x2 – 5)(x2 + 3) (4x2 + 5)(x2 – 3)
  
• the presence of impurities in a solid will elevate and broaden its melting point range.
  
• if k(x) = 5x – 6, which expression is equivalent to (k + k)(4)? 5(4 + 4) – 6 5(5(4) – 6) – 6 54 – 6 + 54 – 6 5(4) – 6 + 5(4) – 6
  
• which character trait is necessary for a person to be in a healthy relationship? respectful outgoing ambitious determined
  
• which phrase identifies the standard difference in elevation on a topography map? index contour contour interval scale bar topographic symbol
  
• a 3,700-mile-long valley created by two tectonic plates that have partially separated