Answer: None
Step-by-step explanation:
for the first question you would want to to multiply 52*1.5 because 52 is the original price and 1.5 is the mark up. by multiplying these together you get 78. next you need to add the tax. For tax you should multiply 78*.1 (this answer is 7.8) and add the answer to 78, getting the total of 85.8. I really hope this helps :-)
Answer:
The interval of decrease is 0 ≤ x ≤ 1.25
Step-by-step explanation:
First, we have to find the point where it changes from increasing to decreasing or decreasing to increasing.
The graph shows that there is a decrease before 1.25 h, and it increases after 1.25 h also.
We can further prove that 1.25 is the point of change when we enter 1.25 in place of t in the given equation
d(1.25) = 40|1.25 - 1.25| = 0
We see that the graph is decreasing before 1.25, so the interval will have to end at 1.25.
We also see that there is no increase before 1.25, so we can make the interval begin at 0