Respuesta :

46.
y = x - 3

Answer: (-4;-6) because for x = -4, y = -4 - 3 = -7 not -6.

47.
F = 9/5C + 32
C = 10
F = 9/5 · 10 + 32 = 9 · 2 + 32 = 18 + 32 = 50

Answer: 10°C = 50°F

48.
Answer: 4500ft/5min = 900ft/min