Researchers report that the average teen (age 13-17) sends 1742 ±112 text messages per month.

which of the following is the best interpretation of this information?

a. no teen sent fewer than 1630 texts or more than 1854 texts in a single month.

b. 1742 is an estimate of the average number of texts sent by teens in one month.

c. the margin of error is ± 2 years of age.

d. the margin of error is ± 224 text messages

What value of x is in the solution set of 4x – 12 s 16 + 8x?

The scatter plot shows the number of animal cells clara examined in a laboratory in different months: plot ordered pairs 1, 20 and 2, 60 and 3,100 and 4, 140 and 5, 180 what is the approximate predicted number of animal cells clara examined in the 9th month?

Harold wrote this equation to model the level of water in a pool over time. the variable x represents time in hours. f(x) = 3,500 - 225x which statements about the situation are true? check all that apply. the water level is rising. the water level is falling. the initial level of water in the pool was 3,500 units. the initial level of water in the pool was 225 units. the pool was empty after 14 hours. the water was 2,600 units high after 4 hours.