Tinuity MS Grade 8 Pre-Algebra Qtr. 4 (SY19-20) UPDATED
EMEF
Calculating an Interpolated Data Prediction
Chester used the regression equation of the weight loss plan to make a prediction within the given data range.
Complete his work to calculate the number of weekly hours of aerobic activity needed for a monthly weight loss of 3
pounds. Round to the nearest hundredth.
1. Regression equation: y = 1.178x + 0.71
2. Substitute 3 fory:
3 = 1.178x+0.71
3. Subtract 0.71 from both sides: 2.29= 1.178x
2.29 1.178
4. Divide both sides by 1.178: 1178 = 1178*
About
hours of weekly aerobic activity will result in 3 pounds of monthly weight loss.

180

step-by-step explanation:

12-2=10

20-2=18

18x10=180

add 5 subtract 1

step-by-step explanation:

d

step-by-step explanation:

hello and welcome!

so, when we see the words "proportional" along with a table, we need to know that we're looking numbers that divide by the same thing.

looking at this table, we simply have to do a trial and error, and divide to see which numbers have the same quotient. if you look at choice a & c, they both have equal quotients for three of the numbers, with one exception, so those can't be the answer. looking at b, there is no similarity, so that can't be it. then, we see d; if you divide all the numbers in the table, you'll see that they all divide by two, which is a proportional relationship, and our answer!

also, always remember that the x will always be the number that goes into y, and somewhere behind this table, is a formula. for this specific table, the formula would be:

since our x-value is being divided by two to get the y-value. and if they were to ask for more numbers in the series, this is the formula you would use to find them.

6.5

step-by-step explanation:

you said it was in the question

~courtney