Rewrite the following with the magnitude of 6. 6.458×10^10
a- 64, 580×10^6
b-64. 58×10^6
c-645, 800×10^6
d- 0.06458×10^6

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Me! 50 points! why does when we come home, our door is unlocked and there is grease on the door knob, me solve this , and i don't know what category this goes under

If f(x)=2x-6 and g(x)=3x+9, find (f-g)(x)