Given that d(x) = 2x, select all of the following that are true statements.
a. d(x) is a function.
b. x is the dependent variable.
c. d(6) = 3
d. d(x) is a direct variation.
e. d(x) is a rule for the set of points (5, 10), (6, 12) and (-2, -4).
plz

Itook a better photo of the question so y’all can see it i hope it’s a fine photo

4. bob solved the inequality problem below incorrectly. explain his error and redo the problem showing the correct answer. −2x + 5 < 17 −2x + 5-5 < 17-5 -2x/-2 < 12/-2 x < -6

Ameteorologist is studying the monthly rainfall in a section of the brazilian rainforest. she recorded the monthly rainfall, in inches, for last year. they were: 10.4, 10.3, 11.7, 11.1, 8.0, 4.4, 2.6, 1.8, 2.5, 4.4, 7.3, 9.5 fill in the missing values in the formula. what is the variance?