So we need to solve:
3ˣ⁻¹ = 9ˣ⁺²
To do this, we need to have the same base for both sides of the equation.
So let's go with the base of 3.
3² = 9
3ˣ⁻¹ = (3²)ˣ⁺²
3ˣ⁻¹ = 3²ˣ⁺⁴
Since the bases are the same now, we need to get rid of them and we would get:
x - 1 = 2x + 4
Subtract both sides by 2x:
-x - 1 = 4
Add 1 to both sides:
-x = 5
Divide both sides by -1:
x = -5
Take any 2 points, so we'll us (2,16) and (4,32)
then do y2-y1/x2-x1
so 32-16=16
4-2×2
so then do rise(y) over run(x)
so the slope is 16/2 which simplifies to 8
so the rate of change is
y=8x
Answer:
n + 8 = 62.73
the first one
Step-by-step explanation:
To answer that we just need to multiply the 2 numbers, and consider that 25% = 0.25
so we have:
25% of 395
= (25%)(395)
<span>= (0.25)(395)
</span>= 98.75
