A telephone company makes up it's monthly bills as follows:a fixed charge of 800 naira plus a charge proportional to the number of units of call on the telephone.if it charges 2 naira per unit of call,calculate the total charge on
(a)80 units
(b)150units
(c)782units.
I did not understand anything. You did not even explain anything. Nothing was clear at all. Pls, more explanation.
To calculate the total charge on different numbers of units for the telephone bill, we need to add the fixed charge and the charge for the number of units. Here's how you can calculate it:
(a) Total charge for 80 units:
Step 1: Calculate the charge for the units.
- The charge per unit is 2 naira.
- Multiply the charge per unit by the number of units: 2 * 80 = 160 naira.
Step 2: Add the fixed charge to the charge for the units.
- Fixed charge: 800 naira.
- Total charge = Fixed charge + Charge for units = 800 + 160 = 960 naira.
Therefore, the total charge for 80 units is 960 naira.
(b) Total charge for 150 units:
Step 1: Calculate the charge for the units.
- The charge per unit is 2 naira.
- Multiply the charge per unit by the number of units: 2 * 150 = 300 naira.
Step 2: Add the fixed charge to the charge for the units.
- Fixed charge: 800 naira.
- Total charge = Fixed charge + Charge for units = 800 + 300 = 1100 naira.
Therefore, the total charge for 150 units is 1100 naira.
(c) Total charge for 782 units:
Step 1: Calculate the charge for the units.
- The charge per unit is 2 naira.
- Multiply the charge per unit by the number of units: 2 * 782 = 1564 naira.
Step 2: Add the fixed charge to the charge for the units.
- Fixed charge: 800 naira.
- Total charge = Fixed charge + Charge for units = 800 + 1564 = 2364 naira.
Therefore, the total charge for 782 units is 2364 naira.
Good
well, it is clear that y = 800 + 2x
so plug in the various values for x