Answer:
She sold 5 pitchers of lemonade.
Step-by-step explanation:
She sold 2 on Friday and she sold 2 1/2 times that on Saturday so we have to do 2 x 2 1/2 in other words 2 x 2.5 which gives you 5.
:33333
Answer:81 people
Step-by-step explanation:
If you subtract 2500 by 50 then divide by 30 it come out to 81.66 repeat
Answer:
50-37.65=12.35
Step-by-step explanation:
Plug in points to general form of quadratic function:
y=ax²+bx+c
(0,7)
7 = c
(2,13)
13 = 4a +2b + c
(4,3)
3 = 16a + 4b + c
Now solve the system of equations in two unknowns.
Substitute the value of 7 for c in the second equation:
13 = 4a + 2b + 7
6 = 4a + 2b
3 = 2a + b
b = 3 - 2a
Substitute this into third equation:
3 = 16a + 4(3-2a) + 7
3 = 16a + 12 - 8a + 7
3 = 8a + 19
-16 = 8a
a = -2
b = 3-2a = 3 - 2(-2) = 7
a = -2, b =7. c = 7
The quadratic function is y= -2x² + 7x +7
