25 Select the correct answer.
Find the inverse of function f.
90 +7
OA. ;-) = 7x + 9
O B. -(t) = - 3
oc $(x) = 51 -
OD. 11(x)
-907
Reset
Next

Step-by-step explanation:

The given function is f(x) = 9x + 7.  To find the inverse function:

1.  Replace "f(x)  = " with "y = ":  y = 9x + 7

2.  Interchange x and y:  x = 9y + 7        

                                                                          x - 7

3.  Solve this result for y:  9y = x - 7, or y =

                                                                              9

This is the same result as given answer B.

i think it is 70

step-by-step explanation:

step-by-step explanation:

part a. the differences are decreasing, so we know the sequence is not arithmetic. the ratios are constant (=3/4), so we know the sequence is geometric.

part b. from part a, we know the common ratio is 3/4, so each term is 3/4 of the one before. the initial term is the number of gallons at h=1.

g[h] = (3/4)·g[h-1]

g[1] = 384 . . . . initial value required for a recursive definition

part c. the general formula for a geometric sequence is

a[n] = a[1]·r^(n-1)

we have a[1] = 384, r = 3/4, and the term number given by h. the formula that follows is

g[h] = 384·(3/4)^(h-1)

part d. filling in the value and doing the arithmetic, we have

g[12] = 384·(3/4)^11 ≈ 384·0.042235136 ≈ 16.2183 . . gallons

part e. each gallon is 4 quarts, so

16.2183 gal × 4 qt/gal = 64.8732 qt