Question 104094
A) 
Let a=lbs of apples, p=lbs of pears
.
1.5a+2.3p=14
a+p=8
.
a=8-p
1.5(8-p)+2.3p=14
12-1.5p+2.3p=14
.8p=2
p=2.5 lbs
a=5.5 lbs
Check:
2.5*2.3+1.5*5.5=14
 
B)
by substitution (1,-7) is the only correct answer.
.
C)
x^2+2x-2=3x+4
x^2-x-6=0
(x-3)(x+2)=0
x=3, x=-2
.
D)
6x-y/4=-9
3x+2y=-30
.
24x-y=-36
3x+2y=-30
.
the rest is like the 1st problem.
I'll leave that up to you.
.
Ed