Answer:
15.8333333333
Step-by-step explanation:
9.5 divied by 3.5

Put the values of c = 6 and d = 7 to the expression:

All together they spend $87.00
Answer:
y <7
Step-by-step explanation:
Move all terms not containing y to the right side of the inequality.
A. we use the z statistic to solve this problem
z = (x – u) / s
We calculate the value of the sample mean u and standard deviation
s:
u = $30 * 304 = $9120
s = $21 * 304 = $6384
z = (9,600 – 9120) / 6384
z = 0.075
From the normal tables using right tailed test,
P = 0.47
B. At worst 11% means P = 0.11, so the z value at this is
z = -1.23
-1.23 = (x – 9120) / 6384
x = 1267.68