A problem states: "There are 5 more girls than boys at the party. There are 27 children at th
party in all. How many boys are there at the party?"
Let b represent the number of boys.
Which expression represents the number of girls?

b+ 5
5-b
b.5
b-5

Option A, b + 5

Step-by-step explanation:

Step 1:  Determine the equation to find the amount of boys

b + (b + 5) = 27

b:  represents boys

b + 5:  represents girls where they equal 5 more than boys

Option A, b + 5

answer: 204

step-by-step explanation:

we are told that the revenue is

x⋅(4080−10x)=−10x^2+4080x

this is a quadratic function, so to maximize it we should find the x-value of its vertex. recall that the x-value of the vertex of the parabola ax^2+bx+c is given by the formula −b/2a.

so in this case, we have a=−10 and b=4080, so the x-value of the vertex is

−b/2a= −(4080)/2(−10)=204