Shandra claims it will take them about 50 minutes working together because 50 is the mean of 40 and 60

answer: yes that is correct.

step-by-step explanation: mean is adding the numbers up and then dividing by how many numbers there are. you would add 40 and 60 then divide by 2 you would get 50. she is correct.

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.

step-by-step explanation: 4 cause 2+2=4