Answer:
It's B
Step-by-step explanation:
Answer:
$6.50
Step-by-step explanation:
SET UP A SYSTEM OF EQUATIONS WHERE SANDWHICHES IS REPRESENTED BY S AND DRINKS BY D:
6S+4D = 53
4S+6D=47
ADD THEM TOGETHER
10S+10D=100
SOLVE FOR D
10D = 100 - 10S
D = 10-S
SUBSTITUTE THAT VALUE INTO ONE OF THE ORIGINAL EQUATIONS
4S + 6(10-S) = 47
4S + 60 - 6S = 47
COMBINE LIKE TERMS
-2S + 60 = 47
SUBTRACT 60 FROM BOTH SIDES
-2S = -13
DIVIDE BY -2
S = 13/2
S = $6.50
320+30h>980
-320 -320
--------------------
30h>660
/30 /30
-------------------
h>22
he has to jump through more than 22 hoops
You need to substitude the value into the formula given
1/2(3)^3 + 3.4(4)
= 1/2(27) + 13.6
= 27/2 + 13.6
= 27.1
