Answer:
Step-by-step explanation:
It is given that Todd is 30 year old and he perform aerobic activity that may increase his heart beat.
maximum heart beat can be calculated by subtracting the age from 220
For 30 year old male Maximum heart beat
=220-30=190
And during exercise his heart beat increases to 60-90 % of maximum value
60 % of 190=114 beats/min
90 % of 190=171 beats/min
So Heart beat can goes up to 114 - 171 beats/min
Need to attach graph for me to answer.
Answer:

Step-by-step explanation:
Using the Quotient rule:

We can subtract the exponents of x and y:

Therefore, 
Please mark my answers as the Brainliest if you find this explanation helpful :)
Step-by-step explanation:
1099cm might be lol I am poor in math
Answer:
A, B, C, D
Step-by-step explanation:
(A) Checking the Equal Variance Assumption, the appropriate technique to use is:
- The ANOVA (Analysis of Variance) F test
- Plot residuals against fitted values
(B) Checking the Normal Assumption, the appropriate techniques to use are:
- Test for Kurtosis & Skewness
- Kolmogorov-Smirnov Test
- Q-Q Plots (the graphical method) also known as Quantile Plot
- Do not use a histogram; it is not advisable
(C) Checking for Model Misspecification, the appropriate techniques to use are:
- The Ramsey Regression Specification Error Test; also called RESET
- The Davidson & MacKinnon J. Test
(D) Checking for dependent errors, the appropriate technique to use is:
- Plot residuals against time variables