Lance lived in Portugal and Brazil for a total of 14 months to learn Portuguese. He learned an
average of 130 new words per month when he lived in Portugal, and an average of 150 new words
per month when he lived in Brazil. In total, he learned 1920 new words.
Write a system of equations to represent this situation. Use x to represent Portugal, and y to
represent Brazil.

your question is incomplete, write all the numbers in the sequence that it tells you.  

step-by-step explanation:

[2, 2.5)

(2.5, 3]

step-by-step explanation:

i think its these two not sure [2, 2.5)

(2.5, 3]

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:

(4x+15)^2

step-by-step explanation:

factor using the perfect square rule