Mary spent a total of $320.92 for a party. She spent $200.20 on food, plus an additional $30.18 for each hour of the party. How long was the party? Write an equation first!

answer: solve 5\cdot 2^x=2405⋅2  

x

=2405, dot, 2, start superscript, x, end superscript, equals, 240.

solution

to solve for xxx, we must first isolate the exponential part. to do this, divide both sides by 555 as shown below. we do not multiply the 555 and the 222 as this goes against the order of operations!

\begin{aligned} 5\cdot 2^x& =240 2^x& =48 \\ \end{aligned}  

5⋅2  

x

2  

x

​    

=240

=48

​

step-by-step explanation:

current in the circuit at time t is /, then the power delivered to the resistor is

step-by-step explanation: