(a) you have data for many years on the average price of a barrel of oil and the average retail price of a gallon of unleaded regular gasoline. if your desire is to predict the price of gasoline, the explanatory variable on the x -axis: a. is the price of gasoline. b. can be either oil price or gasoline price. c. is the price of oil. d. none of the above.
(b) what are all the values that a correlation r can possibly take? a. 0 ≤ r ≤ 1 b. -1 ≤ r ≤ 1 c. r ≥ 0 d. none of the above.
(c) in a scatterplot of the average price of a barrel of oil and the average retail price of a gallon of gasoline, you expect to see: a. a positive association. b. a negative association. c. very little association. d. none of the above.

step-by-step explanation:

c. 27 units.

step-by-step explanation:

we are told that in circle a, ∠bae ≅ ∠dae.

we can see from our given diagram that in and ;

, as these are radii of our given circle.

therefore, by sas congruence postulate.

hence, side be will be equal to side de as corresponding parts of congruent triangles are congruent. so we can set an equation to find the value of x as:

now let us substitute x=17 in the expression for the length of be.

therefore, length of be will be 27 units and option c is the correct choice.

true

step-by-step explanation:

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