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:
B. -1.75 and 4
Step-by-step explanation:
f(x)=g(x)
Input the equations
x²-2x-8 = 1/4x-1
add 1 to both sides
and subtract 1/4x from both sides
x²-2 1/4x - 7 = 0
factor
a + b = -2 1/4
a * b = -7
1.75 + -4 = -2 1/4
1.75 * -4 = -7
reverse their symbols
1.75 becomes -1.75 and -4 becomes 4.
Your answer is 250
Step-by-step explanation:
10 x 5. Multiply that.
Then multiply your final answer of 50.
250.
73.4% I hope that this helps