What is half the sum of x and y decreased by one-third y as a algebraic expression

Step-by-step explanation:

We can translate these words into an expression by just reading them and interpreting them.

Half the sum of x and y.

We know that it's going to include , and if we're taking half of that, we multiply that by , so

We also know that one third of y will be multiplying y by , so .

Since we are decreasing by  , there's a minus sign between the terms.

So, .

Hope this helped!

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.

18.75 gallons

step-by-step explanation: