She has two more cards than pens. Hope it help!
Answer:
The answer is about 1.732, the exact form being 
.
Step-by-step explanation:
The square root of 12 is 3.4641. You then divide this by 2 and you get approximately 1.732. This in the exact form is .
Answer:
f(-2)=27
Step-by-step explanation:
Plug in -2 into x
f(-2)=2(-2)^2-8(-2)+3
f(-2)=8+16+3
f(-2)=27
Answer:
Better deal at Store B.
Step-by-step explanation:
The key to understanding this problem lies in recognizing that 16 ox = 1 lb, which leads to 64 oz = 4 lb.
Find and compare the two unit costs:
Store A:
$11.99
---------- = $0.20/oz
60 oz
Store B:
$11.99
------------ = $0.19/oz
64 oz
The 4-lb bag available at Store B has the lower unit cost and is a better deal there.
Standard form: Ax+By=C
9y=12x+0.2
-12x+9y=0.2
12x-9y=-0.2
A=12
B=-9
C=-0.2
