Which of the following are true assumptions underlying linear regression? (1) for each value of x, there is a group of y values that is normally distributed. (2) the means of these normal distributions of y values all lie on the regression line. (3) the standard deviations of these normal distributions are equal?
a)only (1) and (2)
b)only (1) and (3)
c)only (2) and (3)
d)all of them

Question 3 (essay worth 10 points) (03.06 mc) part a: max rented a motorbike at $465 for 5 days. if he rents the same motorbike for a week, he has to pay a total rent of $625. write an equation in the standard form to represent the total rent (y) that max has to pay for renting the motorbike for x days. (4 points) part b: write the equation obtained in part a using function notation. (2 points) part c: describe the steps to graph the equation obtained above on the coordinate axes. mention the labels on the axes and the intervals. (4 points)

Write the equation in logarithmic form m^x=n

Olga bought a new skirt that cost $20. sales tax is 5%. how much did olga pay, including sales tax? 7.