Your answer most likely will be A
Both pound and kilogram are units of measurement of weight or mass. A pound is an imperial unit of mass or weight
q= 6
r= 7
work--
Multiply 1st column by -2:
-30q+8r=-124
5q+8r=86
Subtract 2nd column from the first column:
-35q= -210
Solve for q:
q=6
Subtract q=6 by any of the two equations, so:
-30q+8r=-124
-30*6+8r=-124
Solve for r:
r=7
Answer:
A. pen, $0.75; pencil, $0.50.
step-by-step explanation: .75x4=$3.00. .50x4=$2.00 . $3.00+$2.00=$5.00