Answer:
Step-by-step explanation:
48% of n = 0.48n = 40.32
n = 84
20% of n = 0.20*84 = 16.8
D is the answer. Hope this helped.
Answer:

Step-by-step explanation:
We have the function 
In this case we want to find the value of f0)
To find f(0) you must replace the x in the function with the number 0 and solve as shown below



Therefore

Answer:
y = 5
z = 55
Step-by-step explanation:
90 - 35 = 55
z = 55
7y = 35

y= 5
Answer:
42
Step-by-step explanation:
We know that 10x + 6y = 7, and so
6(10x + 6y) = 6(7) = 42