Question

Since the opening night, attendance at Play A has
increased steadily, while attendance at Play B first rose and then fell.
Equations modeling the daily attendance y at each play are shown below,
where x is the number of days since the opening night. On what day(S)
was the attendance the same at both plays? what was the attendance?

Play A: y = 16x + 150
Play B: y = -x^2 60x - 10

answer choices:

The attendance was the same on day 40. The attendance was 790 at both plays that day.
The attendance was the same on day 4. The attendance was 214 at both plays that day.
The attendance w

Answer 1

@triciaal

Answer 2

set the y's equal and solve

Answer 3

okay

Answer 4

this will give the day the attendance the same
is that a "+ 60x"

Answer 5

16x + 150 = -x^2 + 60x -10
x^2 -60x +16x + 150 + 10 = 0

Answer 6

so the answer is:
the attendance was never the same on both plays?

Answer 7

can I ask another question @triciaal

Answer 8

sure but before you go to the next ? how did you decide this one

Answer 9

Because of the step which shows it was 0, that meant that the answer would be none, and they never did. that was the last answer choice, it just did fully come out.

Answer 10

did you plug the choices and check
you did not verify +60x

Answer 11

so your saying I'm wrong?

Answer 12

i am saying did not find x and therefore did not actually check to confirm
did not plug the given numbers to check

Answer 13

Wait so you don't know if I'm right? I'm confused now, and I don't usually go back and check like that how would I do that?

Answer 14

I set the y's equal to find the value of x but the eqn written was not clarified so i did not solve for x; you did not answer

Answer 15

what is the next question?

Answer 16

oh so was I right? or not?

Answer 17

let me write the next question

Answer 18

the answer is b it I use +60x

Answer 19

look at the question did you miss a plus sign that's what i need to know and you did not answer

Answer 20

yes on Play B

Answer 21

there was a missing + sign ur right

Answer 22

14. What ate tje solutions to the system?

y = x^2 - 6x + 7
y = -x + 13

(-1, 14) and (6, 14)
(-1, 7) and (6, 14)
(-1, 13) and (6, 7)
no solution.

Answer 23

@triciaal

Answer 24

set the y's equal

Answer 25

x^2 -6x + 7 = -x + 13

Answer 26

add x -13 to each side

Answer 27

group like terms

Answer 28

x^2 -5x -6 = 0

Answer 29

what are the factors of -6 that add to -5

Answer 30

lets use -6 and + 1
x^2 - 6x + x -6 = 0
x(x + 1)-6(x+1) = 0
(x+1)(x-6)=0

Answer 31

hmm...

Answer 32

okay

Answer 33

x= -1, x = 6
you have the x value put in the 2nd eqn and find y

Answer 34

i dont see the ans I got
(-1, 14) and (6, 7)

Answer 35

its there, its the first option

Answer 36

your first option has (6, 14)

Answer 37

oops haha, on my test it says:
(-1, 14) and (6, 7) I copied wrong lol its supposed to be the first choice.

Answer 38

can we do another?

Answer 39

thank you

Answer 40

last one for now i have to get going

Answer 41

haha no prob

Answer 42

okay

Answer 43

15. Simplify the radical expression.
\[\sqrt{72} \]

\[2\sqrt{6}\]
\[6\sqrt{2}\]
\[-6\sqrt{2}\]
12

Answer 44

alright there it is and I will be back in just a moment

Answer 45

what are the prime factors of 72

Answer 46

rt 72 = rt of 2*2*2*3*3
2*3 *rt2 = 6rt2

Answer 47

remember rt2 *rt2 = 2 and rt3*rt3 = 3

Answer 48

with practice you will learn to factor out perfect sq
72 = 4 * 2 * 9
72 = 2*36
perfect sqs 4,9, 36

Answer 49

choice c nonetheless

later

Answer 50

thank you!! have a nice day sorry i had to leave for a moment.