The cost C, in dollars, of a prepaid cell phone call is proportional to the time t, in minutes, that the call lasts. The equation that represents this relationship for Carrier A is C = 0.15t. The table below shows the relationship for Carrier B. Which carrier has a lower unit rate?
Time
(minutes)
2
5
10
30
Cost
(dollars)
0.24
0.60
1.20
3.60
A
Carrier A
B
Carrier B
С
Both carriers have the same rate
D
The relationship cannot be determined

The force that must be applied is 80N

Step-by-step explanation:

Here, we are talking about simple machines; a screw is an example of a simple machine. Other examples include lever, nail puller, wheelbarrow, crank, etc.

Here, we are talking about simple machines; a screw is an example of a simple machine. Other examples include lever, nail puller, wheelbarrow, crank, gear, etc.

Simple machines are devices that can be used to multiply or augment a force that we apply – often at the expense of a distance through which we apply the force. 

The mechanical advantage for any simple machine is the ratio of output to input force magnitudes. That is,

Mechanical advantage (MA) = Force output / Force input

From the question,

Mechanical advantage (MA) = 12.5

Force output = 1000N

Force that must be applied, that is, force input = ??

Therefore,

12.5 = 1000N/ Force input

Force input = 1000N/12.5

Force input = 80N

Hence, the force that must be applied is 80N