Answer:

Step-by-step explanation:
Given
Number of service bays 
Time taken by each bay to finish one oil change 
Working capacity
hours per day
Thus, in
hours the total number of times one bay has changed the oil is equal to

If one service bay's capacity is equal to
, capacity of two service bays is equal to

Thus, the design capacity is 
25% of 80
25/100 or 1/4 x 80 = 20
So $20 were spent on shorts, then $60 were left over.
65% of 60 on sandals.
so 65/100 x 60 = 39
So we can see that the sandals cost $39.
Step-by-step explanation:
6x2 - x + 3 - (-5x2 + 10x - 1)
6x2 - x + 3 + 5x2 - 10x + 1
Solving like terms
11x2 - 11x + 4
Answer:
13
Step-by-step explanation:
substitute all the numbers in
6+3/6+3/6+6=13
Answer:
B) Experiment: you imposed a treatment (new fertilizer on some plants, old on others) to determine its effect.
Step-by-step explanation:
In this situation, the fertilizer developer wants to evaluate a hypothesis, not just observe, by subjecting plants to two different treatments (new and old fertilizer) in order to determine which treatment provides a more desirable effect (more plant growth).
This process configures an experiment.
The answer is alternative B)