There is a $40 fee to rent a chain saw, plus $9 per day. Let x represent the number of days the saw is rented and y represent the charge to the user in dollars. If the total charge is $211, for how many days is the saw rented?

The saw was rented for 19 days

Step-by-step explanation:

Given data:

$40 fee for rentals plus $9 per day

Let x represent the number of days the saw is rented

y represent the charge to the user in dollars.

40 + 9x = y  (equation from the question)

If total charge = $211

40 + 9x = 211

9x = 211 -40 (grouping like terms)

9x = 171 (Making x the subject of the formula by dividing both sides by 9)

x = 19

infinitely many solutions

step-by-step explanation:

we have been given the equation;

2(2x + 3) = -4 + 2(2x + 5)

we need to determine the value of x.

2(2x + 3), we expand this expression to obtain 4x + 6

similarly 2(2x + 5) will become 4x + 10

now we have;

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 10 - 4

4x + 6 = 4x + 6

the expression on the left hand side is identical to the one on the right hand side. therefore, we are looking at just a single straight line whose equation is;

y = 4x + 6

consequently, we shall have infinitely many solutions