A new amusement park has a sign posting the cost for rides. How much would it cost for 18 rides?

It would cost $51 for 18 rides

Step-by-step explanation:

if it costs $8.50 for 3 rides, you could easily just multiplied the price of 3 by 6 because 6 x 3 = 18 rides

And 8.5 x 6 = $51

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

because parallelagram have all 4 angels the same size dependeing and a rectangle and square are oth parallelogram