Working out the expression 7(3ˣ) is first to calculate the value of 3ˣ then multiply the answer to 7.
For example, let x = 2
Then 7(3ˣ) = 7(3²) = 7 × 9 = 63
With the same value of x = 2, calculating 21ˣ = 21² = 441, which isn't the same answer with the expression 7(3ˣ)
Answer:
3
Step-by-step explanation:
Answer:
9
Step-by-step explanation:
4x - 12 + 2x = 3x + 15
6x - 3x = 15 + 12
3x = 27
x = 9
Answer:
y=1/2x
Step-by-step explanation: