R(x) = 150 (x2 + 1) gives the monthly revenue in millions x months after an ad campaign. in how many months will the revenue be 30 million? a) 2 months b) 4 months c) 6 months d) 8 months

A) 2 months

Step-by-step explanation:

Given the revenue as a function of the time in months, to make 30 million in revenue, the function will be equated to the amount and then solved for x which is the number of months.

As such, if the revenue function is

R(x) = 150/(x2 + 1)

Then

R(x) = 150/(x2 + 1)  = 30

(x2 + 1) = 150/30

x2 + 1 = 5

x2 = 4

x = √4

x = 2

it will take 2 months to generate 30 million

he used the algebra tiles correctly.

step-by-step explanation:

given : 3x(2x-1)

solution :

since he used algebra tiles .

armando's solution is the same in the solution shown in figure

as he distributed 2x into x and x and wrote them vertically

and also write   -1 vertically

and 3x into x and x and x and wrote it horizontally

performing the multiplication in the algebra tiles we get

and solving the given expression :

3x(2x-1)

since solving the expression using tiles   and solving the expression algebraically we get the same answer

thus   we can choose the first statement as the answer to this problem which is "he used the algebra tiles correctly".