A laptop battery has 80% power after 1 hour of use and 20% after 4 hours of use . What is the slope ?

5/1

Step-by-step explanation:

After 5 hours, it would be at zero.  And 100 divided by 4, is 20.   Meaning that the slope is 5/1, or 5.

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

ok

step-by-step explanation: