Identifying domain and range

A

B

Step-by-step explanation:

The domain is the span of x-values covered by the graph, while the range is the span of y-values covered by the graph.

From the graph, we can see that the x-values covered by the graph is infinite as it stretches infinitely in both directions. Thus, the domain of the graph is all real numbers.

In interval notation, this would be:

Also, from the graph, we can see that the y-values covered by it only goes up to a maximum of y=4. The rest is all values less than 4. The range is all numbers less than or equal to 4. Therefore, in interval notation, this is:

We use brackets because we include the 4 in our range.

Thus, the answer is A and B.

38.5

step-by-step explanation:

lets say, first number = r

second number = 3r+7

total = 49

(r)+(3r+7)= 49

4r+7 = 49

4r = 42

r = 42/4

r= 10.5

3r+7 = 3(10.5)+7 = 38.5

hope this

set each factor equal to 0

4x-3 = 0

2x-1 = 0

solve for x.

4x-3=0

4x=3

x= 3/4

solve for x. 

2x-1= 0

2x= 1

x= 1/2

your answer should be 1/2 is less than or equal to x and 3/4 is greater than or equal to x