If f(x)=x^3-1 and g(x)=2x-1, which choice is equivalent to g(f(x))? a) x^3-3
b)2x^3-3
c) 2x^3-2
d)2x^3-1

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step-by-step explanation:

1+2+3+4+5+6+7+8+9+10 = 55

2*10 = 20

55-20 = 35

they are simplified

step-by-step explanation:

a_n = a_1 + (n - 1)d

the first term is 6.

the common difference d = ?

when you find d, replace n with 7 and d with the common difference to find your answer.