Which equation has a constant of proportionality equal to 222? Choose 1
Choose 1

(Choice A)
A
y=\dfrac{10}{5}xy=
5
10
​
xy, equals, start fraction, 10, divided by, 5, end fraction, x

(Choice B)
B
y=\dfrac{2}{2}xy=
2
2
​
xy, equals, start fraction, 2, divided by, 2, end fraction, x

(Choice C)
C
y=\dfrac{2}{4}xy=
4
2
​
xy, equals, start fraction, 2, divided by, 4, end fraction, x

(Choice D)
D
y=\dfrac{22}{2}xy=
2
22
​
x

a

step-by-step explanation:

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: