Gia is thinking of a number, witch she calls n .she adds 4 to the number and then doubles the sum. write an expression to represent Gia's number.

2(n+4)

good luck

correct answer:

i^31 = -i

"standard form:

3x2 + 14x − 10 = 0

solutions based on quadratic formula:

x1   = −14 − √ 142 − 4×3×(−10) /   2×3   = −14 − 2 × √ 79 /   6   ≈ −5.296

x2   = −14 + √ 142 − 4×3×(−10) /   2×3   = −14 + 2 × √ 79 /   6   ≈ 0.629