Answer:
Lon's Lawns
Step-by-step explanation:
32X9=288
25X10+50=300
X=0.2
All you have to do is simplify both sides of the equation. Add 3x to both sides. Then subtract 0.8 from both sides.
The function we have is:

This is a linear function.
We can find the slope (the rate of change) of this function, by comparing it to the general slope-intercept equation:

Where m is the slope (rate of change) and b is the y-intercept of the line.
By comparison, we see that m an b are:

Since we are asked for the value of the rate of change, the answer is the value of m:

which is option A.
Answer:
A. 34.95
Answer:
x=8.499
y=0.167
Step-by-step explanation:
the equation says:x^2-9y^2=72....(1)
x+3y=9.......(2)
divide (2) from (1),it becomes:
x-3y=8
making x subject of formula,
x=8+3y....(3)
submitting (3) into (1),it becomes
(8+3y)^2-9y^2=72
64+48y=72
48y=72-64=8
y=8/48=0.167......(4)
submitting (4) into (2),it becomes
x+3(0.167)=9
x+0.501=9
x=9-0.501
x=8.499