Answer:
-78
Step-by-step explanation:
substitute x as 10
so then you get
(-8) (10) + 2
then simplify
-80+2 = -78
Answer:
Step-by-step explanation:
okey first you have to make the equation:
99+X0.5= ?
You express the 50cents like 0.5 because they are half a dollar
X signifies the you drove so X=120
99+120(0.5)
120 X 0.5= 60
99+60=150 You have to pay 150 dollars
This only works if your talking about dollars.
Hope this helped :)
Answer:
32 lb
Step-by-step explanation:
Let a = number of pounds of type A coffee used.
Let b = number of pounds of type B coffee used.
From the statement:
"This month's blend used three times as many pounds of type B coffee as type A"
we get this equation:
b = 3a
"Type A coffee costs Karen $5.50 per pound, and type B coffee costs $4.25 per pound."
She spend (in dollars) 5.50a + 4.25b, but since b = 3a, we get
5.5a + 4.25(3a) = 5.5a + 12.75a.
She spent $584, so
5.5a + 12.75a = 584
18.25a = 584
a = 32
She used 32 lb of type A coffee.
