Which expressions are equivalent to -56z+28? a) 1/2 ⋅ ( -28z + 14 ) b) ( -1.4z + 0.7 )x 40 c) (14−7z )⋅(−4) d) (8z−4)(−7) e) −2(−28z−14) !

Choose the linear inequality that describes the graph. the gray area represents the shaded region. a: y ≤ –4x – 2 b: y > –4x – 2 c: y ≥ –4x – 2 d: y < 4x – 2

Which exponential function has an initial value of 2? f(x) = 2(3x) f(x) = 3(2x)

An office supply company conducted a survey before marketing a new paper shredder designed for home use. in the survey, 80 % of the people who tried the shredder were satisfied with it. because of this high satisfaction rate, the company decided to market the new shredder. assume that 80 % of all people are satisfied with this shredder. during a certain month, 100 customers bought this shredder. find the probability that of these 100 customers, the number who are satisfied is 69 or fewer.