Amusic shop charges a deposit of $20, plus a monthly rate of $30 to rent an instrument. for how many months did avi rent an instrument. for how many months did avi rent an instrument if he spent a total of $80
a) 2 months
b) 3 months
c) 4 months
d) 5 months

A) 2 months

Explanation:
The base fee is $20.
The monthly rate is $30.
We can represent the number of months with the variable ‘x’.

The equation for this problem would look like this: 20+30x=80
In words, it would be: base fee + monthly rate*x = $80

Hope this helped!

The great thing about this problem is they give you everything you need to solve it easily. so the expression is: 12h+30w12h+30wand so everywhere you have an “h” you place 66. and everywhere you have a “w” you place 33. then the expression will look like this: 12(66)+30(33)12(66)+30(33)from here you multiply and then add. getting the following of: $785,862hope this

Common ratio, exponential function, half-life that's all i have so