Answer:
c
Step-by-step explanation:
12-5=7, and 7times 5 is 35 so Meena needs to make at least 8 pies to make a profit which would be $5
Answer:
~15.55 is the mean.
Step-by-step explanation:
The class of frequency is given as 0-9, 10-19 and 20-29.
First of all, let us taken middle value of class:



Formula for mean:

where f is the frequency
and m is the mean value calculated in above step (4.5, 14.5 and 24.5)
The frequencies are given as:
4.5 - 24
14.5 - 20
24.5 - 32
Putting the values in above formula:

Please refer to the attached image that contains the table for calculation of mean.
So, mean = ~15.55
y=x²-10x-7
a>0 so we will be looking for minimum
x=-b/2a=10/2=5
y=25-50-7=-32
Answer: (5;32)
y=-4x²-8x+1
а<0 so we will be looking for maximum
х=-b/2a=8/-8=-1
у=4+8+1=13
Maximum point (-1;13)
She is wrong because <span>0.0135=0.01350</span>