A magazine pays authors by the word for essays that are submitted. Authors are paid $0.10 per word for the first 250 words and $0.05 per word for every word after 250 words. Sam submitted three essays: a 300-word essay, a 400-word essay, and a 500-word essay. How much did the magazine pay Sam for his three essays?

add an image, and i will answer

step-by-step explanation:

47.28 or 47.2857143

step-by-step explanation:

you just divide 331 by 7 and you get that answer. ( i think so tho)

"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