Devin has started a lawn care service. He will charge a mowing fee of $10 plus $3 per square yard of lawn. He also offers trimmi
2 answers:
Answer:
Option D is correct.
Charge for the mowing = 10 + 3xy
Step-by-step explanation:
here, x represents the length of the lawn and y represents the width of the lawn.
= xy square yard
Perimeter of lawn = 2 (x+y) = 2x + 2y yard
As per the statement:
Devin has started a lawn care service. He will charge a mowing fee of $10 plus $3 per square yard of lawn.
then;
Charge for mowing =
= 10 + 3xy
Also, he offers trimming service at $8 plus $1 per yard of the perimeter.
⇒ Trimming service = = 8 + (2x +2y)
Therefore, from the expression: 10 + 3xy +8 + (2x+2y)
10 + 3xy represents the charge for the mowing.
You might be interested in
Answer:
$42,890
Step-by-step explanation:
The standard form for an exponential equation is
where a is the initial amount value and b is the growth rate or decay rate and t is the time in years. Since we are dealing with money amounts AND this is a decay problem, we can rewrite accordingly:
where A(t) is the amount after the depreciation occurs, r is the interest rate in decimal form, and t is the time in years. We know the initial amount (70,000) and the interest rate (.04), but we need to figure out what t is. If the car was bought in 2006 and we want its value in 2018, a total o 12 years has gone by. Therefore, our equation becomes:
or, after some simplification:
First rais .96 to the 12th power to get
A(t) = 70,000(.6127097573)
and then multiply.
A(t) = $42,890