42 is 21% of 200. This is because 200*0.21 = 42.
Answer:
<em>x = 2</em>
Step-by-step explanation:
<u>Exponential Equations</u>
Solve:
Separate each exponential:
Operating:
Multiplying by 5:
Rearranging:
Recall that:
Calling
Factoring:
There are two possible solutions:
y=25
y=-50
Since
y cannot be negative, thus:
The solution is:
x = 2
10x + 25 = $145
10x = $120
x =10
The number of poses is 10
I am pretty sure it is 120 or 30