Answer:
a. Mason's rent will increase by $302.40 next year.
b. Mason's new rent per month next year will be $445.20.
Explanation:
The first question is asking us how much Mason's rent will increase next year.
If the contract on Mason's apartment states that his rent will increase by 6% next year, and he is currently paying $420 per month, to calculate the increase of the rent next year, we will first have to multiply $420 by 12 months to calculate how much Mason is paying in rent a year:
![420* 12=](https://img.qammunity.org/2021/formulas/mathematics/middle-school/ohoqn8hn8qs955mu99vhm29rl59rd3lwj0.png)
![5040](https://img.qammunity.org/2021/formulas/mathematics/college/aik4eaymwicqwer2cwaue5jlmrrpxuj60s.png)
Therefore, Mason is currently paying $5040 a year.
With this information, we will now need to calculate 6% of $5040. To calculate 6% of $5040, convert 6% to decimal form, and multiply it by $5040.
6% means 6 per cent/hundred, so it can be represented as:
![(6)/(100)](https://img.qammunity.org/2021/formulas/mathematics/high-school/hhcdcd6kmv6dp5xg30zog02rx4d5tknnsy.png)
The fraction
can be represented as (we're two places behind the decimal, in the hundredths place):
![0.06](https://img.qammunity.org/2021/formulas/biology/college/ukuiudhal0qm8n6xqltupmz11u2vtoslrm.png)
Now, multiply the decimal form of 6% by $5040:
![0.06*5040=](https://img.qammunity.org/2021/formulas/mathematics/middle-school/au73zm80r63aln7y9yi9x9givyy5z3yvn9.png)
![302.40](https://img.qammunity.org/2021/formulas/mathematics/middle-school/o3h453bju2xrxs39qi89t5m82wxess5h22.png)
Therefore, Mason's rent will increase by $302.40 next year.
-
To calculate Mason's new rent per month next year, we can divide $302.40 into 12 months to see the rent increase per month, and then add that quotient to Mason's current rent per month, $420:
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![12=](https://img.qammunity.org/2021/formulas/mathematics/middle-school/g9lzd9nzusl0yfrktfsbiqhmyhrxfpy3g9.png)
![25.20](https://img.qammunity.org/2021/formulas/mathematics/middle-school/8jcbxap9j45q532tkmu85ek64mwe32y91c.png)
Now, that we know the rent per month will increase by $25.20 next year, we can add $25.20 to Mason's current rent per month:
![420+25.20=](https://img.qammunity.org/2021/formulas/mathematics/middle-school/x2hvcmtres64c6tgck6912ua52ozzhmuih.png)
![445.20](https://img.qammunity.org/2021/formulas/mathematics/middle-school/dunchqazaga8ypmw53guljrqhc7vmti7ah.png)
Therefore, Mason's new rent per month next year will be $445.20.