Answer:
They are not equivalent
Step-by-step explanation:
We want to determine if 1/2(4 - 2x); 2 - 2x are equivalent.
Let us take the first expression and simplify to see if we can get the second expression.
Let us expand using the distributive property to get:
This simplifies to:
Therefore 1/2(4 - 2x); and 2 - 2x are not equivalent
For each of the given answer choices, substitute the x-value into the given equation f(x) = 3(1/4)^x and see the equation gives the same f(x), or y-value.
Remember f(x) is the same thing as y and so coordinates for a point are in problem is (x, f(x))
Let's try the first coordinate (-2, 48). The x-value given by the coordinate is -2 and the f(x) value is 48.
Substituting x as -2
into the equation,
This matches with the answer choice (-2, 48) so A should be correct.
But you can also check the other answer using the same process to make sure.
Answer:
Total tarts = 45
Step-by-step explanation:
Let x be the total tarts
Pineapple tarts = 1/5
So, coconut tarts are 4/5
She gave 1/2 of the coconut tarts to her uncle,
1/2 * 4/5 = 4/10 = 2/5
So, to find x
4/5x - 2/5x = 18
2/5x = 18
2x = 18 x 5
x = 90/2
x = 45
That is going to be false