When Lúcia plays golf at the Rolling Hills golf course, she loses about 12 balls on average. Wher she plays golf at the Meandering Meadows golf course, she loses about 8 balls on average. If Lúcia lost approximately 100 balls after playing at Rolling Hills r times and Meandering Meadows m times , which of the following equations best represents the relationship between and m?

A) 8r+12m=100
B)12r+8m=100
C)12r-8m=100
D)8r-12m=100

1. minimum

2. 6400

3. eight

hope this !

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

5=812a+9+3

step 1: simplify both sides of the equation.

5=812a+9+3

5=(812a)+(9+3)(combine like terms)

5=812a+12

5=812a+12

step 2: flip the equation.

812a+12=5

step 3: subtract 12 from both sides.

812a+12−12=5−12

812a=−7

step 4: divide both sides by 812.

812a /812 = -7/812

a= -1/116

so the answer is

a=   -1/116