Answer:
one hd=a=1.75, one hb=b=2
Step-by-step explanation:
if one hd(hotdog) & one hb(hamburger)=$3.75
one hd(hotdog) & three hb(hamburger)= $7.75
let hd=a and hb= b
by elimination:
a + b= 3.75......eq 1
a + 3b= 7.75.....eq 2
eliminate a and a by subtraction
-2b=-4
b=4/2=2
substitute 2 in place of b in any of the equation
a + b= 3.75
a + 2= 3.75
a= 3.75-2= 1.75
