30b + 100u = 900
5b + 25u = 200....multiply by -6
------------------
30b + 100u = 900
-30b - 150u = - 1200 (result of multiplying by -6)
------------------add
-50u = - 300
u = 6 <== upgrated phones sold
30b + 100u = 900
30b + 100(6) = 900
30b + 600 = 900
30b = 900 - 600
30b = 300
b = 10 <== basic phones sold
Answer:
<u><em>Good luck!
</em></u>
<u><em></em></u>
0..
Answer:
7
Step-by-step explanation:
Given,
h ( x ) = 1
To find : -
h ( x ) = 3x + 4
h ( 1 ) = 3 ( 1 ) + 4
= 3 + 4
h ( 1 ) = 7
Answer:
A 65.5%
Step-by-step explanation:
Percent decrease = (original - new)/ original * 100 percent
= (290-100)/290 * 100 %
= 190/290* 100%
=.655172414 * 100%
=65.5172414%
To the nearest tenth percent %
65.5%
