The perimeter of a rectangle is given by the expression 2vv + 21, where w is the width and I is the height.
a Find the perimeter of a rectangle if w = 5 and I = 7.
b Find the perimeter of a rectangle with width 8 cm and length 3 cm.
a) Given that w = 5 and l = 7, we can substitute these values into the expression for the perimeter:
Perimeter = 2w + 2l
= 2(5) + 2(7)
= 10 + 14
= 24
Therefore, the perimeter of the rectangle is 24 units.
b) Given that w = 8 and l = 3, we can substitute these values into the expression for the perimeter:
Perimeter = 2w + 2l
= 2(8) + 2(3)
= 16 + 6
= 22
Therefore, the perimeter of the rectangle is 22 cm.
Write expressions for each of the follow'ing.
b
C
The total cost, in dollars, of 10 bottles, if each bottle costs Sr.
The total cost, in dollars, of hiring a plumber for n hours. The plumber charges a $30 call-out fee
plus $60 per hour.
A plumber charges a $60 call-out fee plus $50 per hour. Use an expression to find how much an
8-hour job would cost.
b: The expression for b is simply "b" itself.
c: The expression for c is "c" itself.
The total cost, in dollars, of 10 bottles, if each bottle costs Sr: The expression for this would be "10*Sr".
The total cost, in dollars, of hiring a plumber for n hours. The plumber charges a $30 call-out fee plus $60 per hour: The expression for this would be "30 + 60n".
A plumber charges a $60 call-out fee plus $50 per hour. Use an expression to find how much an 8-hour job would cost: The expression for this would be "60 + 50*8".