Answer:
Linear equation for the monthly cost of the cell plan is 
Step-by-step explanation:
Let u denotes a flat monthly fee and v denotes amount charged per minute.
As the monthly cost is $71.50 if a customer uses 410 minutes,
(i)
As the monthly cost is $118 if a customer uses 720 minutes,
(ii)
Subtract (i) from (ii)
Put 
in (i)
As x denotes the number of monthly minutes used,
linear equation for the monthly cost of the cell plan is
Answer:
f^-1(x) = 1/5 x
Step-by-step explanation:
y = 5x
Exchange x and y to find the inverse
x = 5y
Solve for y
1/5x = y
The inverse is 1/5x
Answer:
9x+2
Step-by-step explanation:
If you would like to know what is the selling price of the sweater, you can calculate this using the following steps:
40% of x is $8
40% * x = 8
40/100 * x = 8 /*100/40
x = 8 * 100 / 40
x = $20
Result: The selling price of the sweater is $20.
Answer:
Step-by-step explanation:
Domain= All real numbers. To get this answer i just plug the x-values into the quadratic formula to get the y-output.
Maximum area=1323/8
Range= y<= 1323/8
