Hari finds that 20 thumbtacks have a mass of about 3.6 grams. There are
about 0.035 ounces in 1 gram. About
how many ounces do 20 thumbtacks
weigh? (7.4E 7.1A, 7.1B, 7.1F)
A 0.13 Oz
C 0.7 OZ
B 0.0063 OZ
D 0.18 OZ

probably the last option

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: