The product of a and b is equal to 11 more than twice the sum of a and b. If b = 7, what is the value of b - a?
Choices
A) 2
B) 5
C) 7
D) 24
E) 35
Given: ab = 2(a + b) + 11 and b = 7   Hence 7a = 2a + 14 + 11   5a = 25, a = 5   (A potential trap. Do not get excited here. We need to find b - a, not a)   b - a = 7 - 5= 
<gadget id="calculator">7 - 5</gadget>
<output>2</output>
2   Correct Option: 2
<result>A</result>
The product of a and b is equal to 11 more than twice the sum of a and b. If b = 7, what is the value of b - a?