Answer:
a = -7
Step-by-step explanation:
a - 5 = -12
+5 +5
a = -7
Answer: $29.15
Step-by-step explanation:
First find the price after the discount.
(60% + 6.25% ) * 44
0.6625 * 44 = 29.15
9c + 8 - 2c + -4
like terms
9c - 2c +8 +-4
7c + 4
Given the function f (x) = 3x, find the value of f-1 (81).
For this case, the first thing you should do is rewrite the function.
We have then:
y = 3 ^ x
From here, we clear the value of x:
log3 (y) = log3 (3 ^ x)
log3 (y) = x
Then, we rewrite the function again:
f (x) ^ - 1 = log3 (x)
Now, we evaluate the inverse function for x = 81:
f (81) ^ - 1 = log3 (81)
f (x) ^ - 1 = 4
Answer:
the value of f-1 (81) is:
f (x) ^ - 1 = 4
