Answer:
Step-by-step explanation:
From the question, Diana wants her total bill to be less than $50.
Diana pays a fixed monthly bill of
$39 for her mobile phone and an additional
$0.15 per minute for phone internet service.
The bill Diana pays for m minutes of using the internet is $0.15m in a month.
The total monthly bill becomes,
The maximum bill she wants to pay is $50.
This inequality can be solved to determine the number of available minutes.
Answer:
Step-by-step explanation:
y=2x²-5x-7
y=2x+2
2x²-5x-7=2x+2
2x²-7x-9=0
2x²-9x+2x-9=0
x(2x-9)+1(2x-9)=0
(2 x-9)(x+1)=0
x=9/2 ,-1
y=11 ,0
solutions are (9/2,11),(-1,0)
Answer:
-2.4
Step-by-step explanation:
129x40%=51.6
51.6-54=-2.4
hope that helps!!
Answer:
-1.25
Step-by-step explanation:
☆ (x₁, y₁) is the 1st coordinate and (x₂, y₂) is the 2nd coordinate
Slope of line
Let c=the number of batches for the cookies; b=that for the brownies.
If $P=the profit, then
maximize P=5c+4.5b, subject to the constaints:
3c+4b<=100 (cost)
2c+b<=45 (time)
b,c >=0
The simplest way to find the suitable b & c is
to solve
3c+4b=100
2c+b=45
for b & c
The result is b=13 & c=16
=>
max. p=5(16)+4.5(13)=$138.5
Hope this helps :)
