The joint effect of two independent variables acting together is called a. transformation. b. joint regression. c. autocorrelation. d. interaction.

D. Interaction

Step-by-step explanation: Interaction is a statistical term that is used to describe the joint effects of two or more variables that are acting together, interaction in this sense does not have an additive function, that is interaction does not lead to addition of the variables, it is also a non-causal relationship. Interaction in statistics are usually described in the context of regression analysis.

the answer is the option b

the range is all real numbers

step-by-step explanation:

we know that

the absolute value parent function is equal to

see the attached figure to better understand the problem

so

a. it is v-shaped > is true

b. the range is all real numbers > is not true

because the range is the > [0,∞)

all real numbers greater than or equal to zero

c. it goes through the origin > is true

d. the domain is all real numbers > is true

step-by-step explanation:

logv3(x+2)=1

rewrite in exponential form:

logb(x) = y is equal to b^y =x

b = 3, y = 1

now solve for x:

3^1 = x+2)

x = 3-2

x = 1

see the picture for the graph.