Calculating and interpreting residuals Cor
You might needCalculator
AP
CO:
Alexander uses cupric chloride to etch circuit boards. He recorded the room temperature, in C. and the etching
um
rate, in of the cupric chloride.
min
Coi
See
After plotting his results. Alexander noticed that the relationship between the two variables was fairly linear, so
he used the data to calculate the following least squares regression equation for predicting the etching rate from
the room temperature:
MY
1
V=2.
Cot
What is the residual if the room temperature was 25 C and the cupric chloride had an etching rate of 5 cm
min
SA
Show Calculator
Pro
Pro

Zoe placed colored blocks on a scale in science class. each block weighed 0.8 ounces. the total weight of all the colored blocks was 12.8 ounces. how many blocks did zoe place on the scale? write and solve an equation to find the answer.

/is used for a fraction 1) if x = 2/3 and y = 3/4, what is the value of (x + y) (x/y) expressed as a common fraction? 2) what is the least positive integer greater than 1 that leaves a remainder of 1 when divided by each of 2, 3, 4, 5, 6, 7, 8, and 9? 3) the ponde family's powerjet pumps 420 gallons of water per hour. at this rate, how many gallons of water will it pump in 45 minutes? 4) kim's insurance company pays 80% of the cost of all prescription medication she purchases in a year beyond the first $250 worth of prescriptions. her prescriptions for this year cost a total of $570. how many dollars of this amounts will kim's insurance company pay?

At a sale this week, a desk is being sold for $213. this is a 29% discount from the original price. what is the original price?