Answer:
(a) 
(b) 7 hours.
Step-by-step explanation:
(a) Let x be the number of hours and y is the total cost.
We have been given that Beatrice and her friends charge $8 per hour of babysitting, so the charges for x hours of babysitting will be 8x.
As they also charge a mandatory $5 per day fee for each child for snacks, so the total charges for babysit each day will be charges for x hours of babysitting plus mandatory charge.
We can represent this information in an equation as:

Therefore, the equation
represents the total cost of using Beatrice’s babysitting service each day.
(b) To find the number of hours Beatrice babysit the daughter, we will substitute y = 61 in our equation and solve for x.

Let us subtract 5 from both sides of our equation.


Let us divide both sides of our equation by 8.


Therefore, Beatrice babysit 7 hours the daughter.
Expression for part c is missing.
Add them up and divide the result by 2, and you'll have the midpoint.
((2-3i)+(-4+6i)) / 2 =
(-2+3i)/2 =
-1+1.5i
Given that Sarah the cheetah ran 100 meters at a speed of 16.8 meters per second.
An olympian ran the 100-meter dash in 9.6 seconds.
Then speed of olympian = distance/ time = 100 meter/ 9.6 seconds = 100 meter/ 9.6 seconds = 10.4166666667 meter/ seconds
whis is approx 10.42 meter/seconds
Now we need to find about how much faster was Sarah the cheetah’s speed, to the nearest tenth of a meter per second.
16.8-10.42 = 6.38 = 6.4
Hence speed of Sarah the cheetah's is approx 6.4 meter per second more than the speed of olympian.
Answer:
I said, certified freak
Seven days a week
Wet-as* pus
Step-by-step explanation: