47. If the sum of 2r and 2r + 3 is less than

11, which of the following is a possible

value of r?

(A) 11

(B) 10

(C) 3

(D) 2

(E) 1

(E) 1

Step-by-step explanation:

2r + (2r+3) < 11

Combine like terms

4r+3 < 11

Subtract 3 from each side

4r + 3-3 < 11-3

4r < 8

Divide each side by 4

4r/4 < 8/4

r <2

The only possible choice is 1

(E) 1

Step-by-step explanation:

the sum of 2r and 2r+3 less than 11 means:

2r+2r+3<11

we simplify we get:

4r+3<11

we take the 3 to the left:

4r<11-3

means

4r<8

we divide both sides by 4 we get:

r<2

so among all those values only the 1 satisfies the condition 1<2

so the answer is E