If y = f(x), then f⁻¹(y) = x.
We have f(x) = 2x + 2, so that f(x) = 4 when
2x + 2 = 4
2x = 2
x = 1
So we know f(1) = 4.
Then this means 1 = f⁻¹(4).
To sum two fractions, you have to transform them in order to have the same denominator: if you multiply both numerator and denominator of the first fraction by 8, and numerator and denominator of the second by 3, you have
Now we can easily sum the fractions, because we only have to sum the numerators:
43f+128. This means that 43 is the dollar amount of f which could be any amount of feet.
The right answer is Option B.
Step-by-step explanation:
Given,
Length of movie = 106 minutes
Time taken to get to theater = x minutes
Time taken to get back = x minutes
Total time = x+x = 2x minutes
Total time = 154 minutes
According to given statement;
Time taken to get to and get back + Length of movie = Total time
2x+106=154
154=2x+106
The equation 154=2x+106 describes the time it takes Ingrid to get to the movie theater.
The right answer is Option B.
Keywords: equation, addition
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Answer: 4 of $5 bags and 2 of $4 bags
4x$5=$20
2x$4=$8
$20+$8=$28