S= number of small boxes
l= number of large boxes

equation 1: s+l=120
equation 2: 15s+45l=3300

solve by elimination, multiply equation 1 by -15.

-15(s+l=120) = -15s-15l=-1800 add to equation 2.

-15s+15s-15l+45l=-1800+3300 = 30l=1500

30l=1500 , l=50

s+l=120, s+50=120 --> s=70

7 0

3 years ago

Manny Brought a brand new car in 2012 for $28750. if the car depreciates by 12% each year, write n exponential function to model

alexira [117]

The formula for exponential decay is
$y=a(1-r)^{x}$

where a is the initial value (28750)
r is the rate of decrease (0.12)
x is the time, in this case in years (6 . 2018-2012 = 6 years)

$y=28750(1-0.12)^{6}$

<span>y </span>≈ <span>13351.62</span>

8 0

3 years ago

A fish tank holds 25 gallons of water. How many quarts of water does the fish tank hold?

Stels [109]

Answer:

100 gallons

Step-by-step explanation:

so 1 gallon equals 4quarts multiply that by 25 you get 100 so there you go

3 0

2 years ago