Th z-score is given by:
z=(x-μ)/σ
where:
μ-mean
σ-standard deviation
hence:
z=(240-200)/20
z=2
The first question is 1.5
We get that by dividing the amount of coco (6) but the number of cups (4)
The second answer is 4/6 or .666666
We get that but dividing 4 by 6
Answer: 9
Step-by-step explanation: 9 x 9 = 81
A.
14+x
B. 6y
Hope I helped!
The first step to solving this problem is to write an equation to express the parameters of the problem. The equation is expressed as this:

You can arrive at this equation by taking the ratio of 2 bike rentals and 1 skate rental and adding up the sum of all the purchases.

This makes x equal to making 2 bike rentals and 1 skate rental. If we solve the original equation for x, the result is 5.838. Since we need to be above 362 dollars, we can round up to x = 6. This translates to 12 bike rentals and 6 skate rentals. Finally, we arrive at the answer of 6 skate rentals.