A canoe travels 4 miles per hour downstream and 2 miles per hour upstream. Let x represent the canoe's speed with no water current (still water) and y represent the speed of the water current, in miles per hour. Then the situation can be represented by this system of equations: x + y = 4 x - y = 2

d

step-by-step explanation:

a negative exponent is translated as follows:

so, we have

b. 6

step-by-step explanation:

we are given the table representing an exponential function.

we can see from the table that, as x is increasing, the value of y is increasing in the power of 6.

i.e. the following relation is obtained,

x = 1, y = 6

x = 2, y = 36 =

x = 3, y = 216 =

x = 4, y = 1296 =

x = 5, y = 7776 =

so, the geometric series obtained is .

thus, the common ratio is given by = = 6.

hence, the common ratio is 6.

exactly you go it

step-by-step explanation: