Answer:
The p-value is 0.0577.
Step-by-step explanation:
The alternate hypothesis is:

P-value of the test:
The p-value of the test is the probability of finding a sample proportion above the one found, which is 1 subtracted by the p-value of z.
We have that z = 1.574.
Looking at the z-table, z = 1.574 has a p-value of 0.9423
1 - 0.9423 = 0.0577
The p-value is 0.0577.
More than one unique triangle. All triangles are equal to 180, so a triangle with these measures CAN exist. It can also exist in multiple sizes.
Take 87-63 = 24, which is the difference of the 2 hours. Divide this by two to get the hourly rate, which is $12.
We can now set up the equation as follows:
4(12) + x = 63
6(12) + x = 87
Now solve for each:
4(12) + x =63
48 + x = 63
x = $15
6(12) + x = $87
72 + x = 87
x = $15
Therefore, the Flat Fee = $15 and the Hourly rate = $12
The answer is b. 38 divided by 10 equals 3.8