Simplify each expression. 1) -7 + 3n^4 - 5 + 5n^2 + 5n^4 - 6n^3
A) 8n^4 - 6n^3 + 5n^2 - 12
B) 10n^4 - 6n^3 + 5n^2 - 11
C) 10n^4 - 6n^3 + 5n^2 - 12
D) 10n^4 - 6n^3 + 5n^2 -

2) 4n^2 - 2n^3 - 7n^2 + 6n - 7n^3 + 6n^4
A) 6n^4 - 9n^3 - 8n^2 + 6n
B) 6n^4 - 9n^3 - 8n^2 + 13n
C) 6n^4 - 9n^3 - n^2 + 13n
D) 6n^4 - 9n^3 - 3n^2 + 6n

answer: all of the odd numbers were opened

the first person was the one that was opening all of the lockers. since one is odd, this causes all of the odd number lockers to be opened in the end.

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

9 sandwiches per hour

step-by-step explanation:

when we have a rate, we want a 1 in the denominator

27/3 = 9

27 sandwiches/ 3 hours = 9 sandwiches/hour

the answer is "add 2y and y"

step-by-step explanation:

you need to collect the like terms first.