Answer:
-1
f (x) = -3(x + 5)
Step-by-step explanation:
1) in f(x) = 1/3x-5, replace f(x)= with y= as follows: y = (1/3)x - 5
2) interchange x and y, obtaining: x = (1/3)y - 5
3) solve this result for y: (1/3)y = -x - 5, or -(x + 5). Next, multiply both sides by 3 to eliminate the fraction (1/3): y = -3(x + 5)
4) replace y with the symbol for "inverse of f(x);
-1
f (x) = -3(x + 5)
Answer:
1/2
Step-by-step explanation:
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Answer: the number of new light bulbs that they put in is 36
Step-by-step explanation:
The Marino's put new light bulbs in all the fixtures the new house.
Each fixture used 2 light bulbs and each room had 3 fixtures. This means that the number of bulbs in each room would be 3×2 = 6 bulbs.
The new house had 6 rooms. This means that the total number of bulbs in 6 rooms would be
6 × 6 = 36 bulbs
