Answer:
you save $5, i can't send a diagram to help though.
Step-by-step explanation:
Answer:
Step-by-step explanation:
The function is given.
To find : 
The input for the function f(x) is (a + 1).
Replace x with (a + 1).
Expand brackets.
Simplifying.
Answer:
$573.75
Step-by-step explanation:
625.00x15%=93.75
625.00-93.75=531.25
531.25x8%=42.50
531.25+42.50=573.75
Step-by-step explanation:
We khow the sum and the product of the zeroes of this quadratic polynomial
Here is a trick :
when we khow the sum S and the product P ofvtwo numbers we can find them by solving :
x²-Sx+p=0
here S= -8 and P=12
so:
x²+8x+12=0
Let Δ be the discrminant of this equation: a= 1 , b= 8 and c=12
Δ= 8²-4*12 =16
the zeros are:
(-8-4)/2= -6
(-8+4)/2 = -2
verify:
-6+(-2)= -8
-2*(-6)= 12
now the polynomial quadratic is:
(x+6)(x+2)
You change 120% into a decimal, 1.20
then you multiply 1.2 by 40
Answer: 48 cakes Fred will sell a day
