1. Is the data representative of a linear, exponential, quadratic, or polynomial model?

x 0.5 0.8 1.1 2.3 2.4 2.9 4.4

y 2.3 3.7 6.1 44.3 22.5 118.1 1418.5

A. Linear
B. Quadratic
C. Exponential
D. Polynomial

2. A least squares regression is f(x) = -3.19x + 123.63, r^2 = 0.59.

The strength of the direction is:

A. Very weak
B. Moderately weak
C. Very strong
D. Moderately strong

The number of hours per week that the television is turned on is determined for each family in a sample. the mean of the data is 37 hours and the median is 33.2 hours. twenty-four of the families in the sample turned on the television for 22 hours or less for the week. the 13th percentile of the data is 22 hours. approximately how many families are in the sample? round your answer to the nearest integer.

When 142 is added to a number the result is 64 more times the number my options are 35 37 39 41

The students in a class were asked how many siblings they have. the data obtained is represented in the dot plot. the number of students who have no siblings is . the number of students who have three or more siblings is .