Consider the following number line. What is the sign of A + BA+BA, plus, B?
Choose 1
Choose 1

(Choice A)
A
Positive

(Choice B)
B
Negative

(Choice C)
C
Neither positive nor negative—the sum is zero.

Aboat has a speed of 9 mph in calm water. it takes the boat 4 hours to travel upstream but only 2 hours to travel the same distance downstream. which equation can be used to find c, the speed of the current? 2(9 – c) = 4(9 + c) 9 + c = 4(9 – c) 9 – c = 2(9 + c) 4(9 – c) = 2(9 + c)