Mariah started baking a cake for a birthday party at 4:05 p. m. She spent 10 minutes mixing the ingredients, 25 minutes cooking the cake, 10
minutes to letting it cool, and 20 minutes icing it. How much time did
Mariah spend getting her cake ready for the birthday party? What time
was Mariah finished baking?
Manny began planting his garden at 12:30 p. m. He planted watermelon
seeds for 15 minutes, strawberry seeds for 10 minutes, cantaloupe
seeds for 20 minutes, and spent 5 minutes watering his garden. How
much time did Manny spend working on his garden? What time did
Manny finish working on his garden?

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

range =5

step-by-step explanation:

to find the range, we take the largest value and subtract the smallest value.

the largest value is 5

the smallest value is 0

the range is 5-0   =5

answer: 5 17/33 % (to the tenth)

step-by-step explanation:

he guessed: 34.5 pounds

actual weight is 32.7

there for he is off:

34.5 -32.7 = 1.8

32.7 is the 100%

1.8 represents %? of 32.7

therefore:

32.7   - 100%

1.8     -     x%

x= 1.8*100%/32.7% = 18*100%/327%

x=1800%/327%   = (5 165/327)%

to the tenth:

5 17/33 %

16 is the coefficient

hope this