She cover more distance after rest 101.7-88.4625=13.2375
Answer:
B. 1.17
Step-by-step explanation:
The z-score is:
z = (x − μ) / σ
z = (67.1 − 64.4) / 2.3
z = 1.17
X + 0.5(x + 1) + 4(x + 2) = -30 (where x is the lowest integer)
x + 0.5x + 0.5 + 4x + 8 = -30
5.5x = -38.5
x = -7
The required integers are -7, -6 and -5 (answer).
The answer is -2 you use the formula -b over 2a