4. It takes Lucy 20 minutes to bike to the pool and minutes per lap to swim in the pool. It
takes Dan 30 minutes to jog to the pool and minutes per lap to swim in the pool. How many
laps must Lucy swim in order for her to spend the same number or more minutes exercising.
than Dan?
the answer is an equation

Step-by-step explanation:Depends on how many laps Dan swims. If Lucy swims L laps and Dan swims D laps, then you want L such that

20 + 3 1/2 L >= 30 + 2 3/4 D

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

d is correct

step-by-step explanation: