Andrew buys 8 pounds of apples for $11.60. He wants to know and use the unit rate of the cost per pound. True or False: Using the unit rate of the cost per pound, do 5 pounds of apples cost $7.25?

1Points
A
True

B
False

A. True

Step-by-step explanation:

$11.60/8 lbs = $1.45/lbs

$1.45*5= $7.25/5 lbs

8(-10x+3.5y-7)

8×-10x + 8×3.5y + 8×-7

-80x + 28y - 56

therefore

-80x+28y-56 is the correct answer

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