F(t)=(0.5)^t *180 is the answer because (0.5)^0=1 (0.5)^1=0.5 (0.5)^2=0.25
Answer:
- $70
- y = 25 + 0.9x
- $250
Step-by-step explanation:
1. 10% of $50 is $5, so the purchases would come to $50 -5 = $45. Added to the $25 membership fee, the total cost for the year would be
$45 +25 = $70
2. The member pays $25 even if no purchases are made. Then any purchases are 100% - 10% = 90% of the marked price. So, the total is ...
y = 25 + 0.90x
3. $25 is 10% of $250, so that is the amount the member would have to purchase to break even on cost.
If you like, you can compare the cost without the membership (x) to the cost with the membership (25+.9x) and see where those costs are equal.
x = 25 +0.9x . . . . . x is the spending level at which there is no advantage
0.1x = 25 . . . . . . . . subtract 0.9x
25/0.1 = x = 250 . . . divide by 0.1
Answer:
(-2,1)
Step-by-step explanation:
<u>Answer</u>:
The discriminant of 3 x squared minus 10 x = negative 2 is 76
<u>Explanation</u>:
<u>Given</u>:
..........(1)
We can find out the discriminant by using the formula
So from the equation (1)
We have b = -10
a= 3
c= 2
Now put all these values of a,b and c in the formula of discriminant to find out the value of D
So
D=76
So the discriminant of the given quadritic equation = 76
Answer:
<h3>x>-1/6 x=(-1,6;+∞)</h3>
Step-by-step explanation:
<h3> 1)-2(8x-4) < 2x + 5</h3><h3>2)-16x+8<2x+5 open the bracket</h3><h3>3)-16x+8-2x-5<0 </h3><h3>4)-18x-3<0</h3><h3>5)-18x<3 devide them by "-3"</h3><h3>6)18x>-3 </h3><h3>7)6x>-1</h3><h3>8)x>-1/6</h3>
<h3>Since we devided the inequation by a negative number, "<" became ">"</h3>
