Which of the following ratios is used to determine ones debt-to-income ratio?
a. 20/28
b. 20/36
c. 28/30
d. 28/36
Please select the best answer from the choices provided

What is the measure of angle tvu shown in the diagram below

What are the domain and range of the function f(x)=2^x+1

Scores on the cognitive scale of the bayley-scales of infant and toddler development range from 1 to 19, with a standard deviation of 3. calculate the margin of error in estimating the true mean cognitive scale score, with 99% confidence, if there are 12 infants and toddlers in a sample.