Answer:
Step-by-step explanation:
Beth earns $54 per day and $10 for each extra hour she works. Ray earns $60 per day and $8 for each extra hour he puts in. They both work five days a week. The equations show their weekly earnings with respect to how many extra hours they work.
Beth: y = 270 + 10x
Ray: y = 300 + 8x
This system is graphed below.
Answer:
The equation for the total number of strings ordered is
X+Y=80
The equation based on the price of each type of string and the total value of the order is
4.50 x +1.50 y = 225
Step-by-step explanation:
Answer:
79.2 tons
Step-by-step explanation:
What must be done is to apply a proportion rule, taking into account what happened in the registry and what is wanted for this new year. In the following way we can calculate the amount of tons of oranges.
Powder concentrate Oranges
45 tons -------------------------> 54 Tons
66 tons -------------------------> X Tons
X = 66 * 54/45
X = 79.2, that is to say that 79.2 tons are necessary to produce 66 tons of powder concentrate to make juice.
Answer:
Step-by-step explanation:
Confidence interval is written in the form, sample mean ± margin of error
The sample mean is an estimator for the population mean. The confidence level is used to express how confident we are that the population mean is within the calculated confidence interval. The lower limit of the given confidence interval is 2.619 hours/day while the upper limit of the confidence interval is 3.401 hours/day
Therefore, the INVALID interpretations of the 95% confidence interval are
A. About 95% of all Cal Poly students spend between 2.619 and 3.401 hours/day watching TV.
B. There is a 95% chance that, on average, Cal Poly students spend between 2.619 and 3.401 hours/day watching TV.
D. In the long run, 95% of the sample means will be between 2.619 and 3.401 hours.
E. None of the above.
Answer:
1. 15 grapes eaten per minute.
Step-by-step explanation:
We have been given a table that shows the number of grapes eaten over several minutes. We are asked to find the rate of change of our given function.
Since we know that rate of change of a function can be found by vertical change of the function divided by horizontal change of the function.

=Difference between two y-coordinates.
=Difference between corresponding x-coordinates of y-coordinates.
Upon substituting coordinates of any two points in above formula we will get,



We can see that rate of change of our given function is 15 grapes eaten per minute and 1st option is the correct choice.