Answer:
x = 3
Step-by-step explanation:
First, multiply all four terms by 10 to eliminate the fractions:
4x - 8(x-4) = 13x - 19
Next, carry out the indicated multiplication, obtaining:
4x - 8x + 32 = 13x - 19
Combining the x terms, we get:
-4x + 32 = 13x - 19, or
32 = 17x - 19
Combining the constants, we get 51 = 17x, and so x = 51/17 = 3.
Step-by-step explanation:
The domain of a graph is all of the possible x values, and the range is all possible y values.
7. The graph goes on for both the x and y values, so the domain is (-inf, inf) and the range is (-inf, inf).
8. In this case, the domain is also (-inf, inf), but the range is [-2, inf) as there are no y values less than -2.
9. The domain is [-2, 2], as the x values only range from -2 to 2. The range is [-3, 3] as the y values range from -3 to 3.
10. The domain is (-inf, inf) because all x values are possible. The range is [-1, 1], as there are no y values greater than 1 or less than -1.
Answer:
B. All real numbers
Step-by-step explanation:
I assume the function is f(x) = 3^x, where x is an exponent.
Since an exponent can be a positive number, a negative number, and zero, x can be any real number. The domain of a function is the set of values that can be used for x.
Answer: B. All real numbers
no substituion only rea numbersStep-by-stion: