Answer:
-11,3
Step-by-step explanation: using foil (x-2)(X+10)=x^2+8x-20
x^2+8x-20-13=13-13 X^2+8x-33=0 factoring you get (x+11)(x-3)=0 so x+11=0
x-3=0
x=-11,3
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Answer:
31 days
Step-by-step explanation:
125 kg/1 day = 3875 kg/x days
x(125) = 3875
x = 3875/125
x = 31 days
You either give the nonmembers a £2 fee for aerobic classes or minus the members fee by £1