Answer: A x=3,-27
Step-by-step explanation:
<span>The number of dimes saved was $1.20/$0.05 = 24
I don't know if it helped or not.
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Answer: 3 & 1
Step-by-step explanation:
Answer:
D. N(a) = (a + 20)/3
Step-by-step explanation:
A(n) = 3n - 20
A is a function of n. The inverse will be: N is a function of a.
Change A(n) to y and n to x.
y = 3x - 20
Switch x and y.
x = 3y - 20
Solve for y.
x + 20 = 3y
3y = x + 20
y = (x + 20)/3
Now switch y to N(a) and x to a.
Answer: N(a) = (a + 20)/3
Answer:
1. 
2. 2x - y - 1 
0
Step-by-step explanation:
