Extra points and brainliest will be given to the one with the correct answer : )

a)

p = # of fruit pies sold

b = # of fruit juice bottles sold

p + b = 79  > p = 79 - b

1.65p + 1.36b = 118.17

Substitute p = 79 - b into 1.65p + 1.36b = 118.17

1.65(79 - b) + 1.36b = 118.17

130.35 - 1.65b + 1.36b = 118.17

130.35 - 0.29b = 118.17

- 0.29b = -130.25 + 118.17

- 0.29b = - 12.18

b = 42

p = 79 - 42

p = 37

37  fruit pies sold

42 fruit juice bottles sold

b)

Mr. Sanchez's class sold: 1.65p = 1.65 (37) = $61.05

Mr. Kelly's class sold: 1.36b = 1.36(42) = $57.12

Mr. Sanchez's class earned more money

C) $61.05 - $57.12 =  $3.93

Mr. Sanchez's class earned $3.93 more than Mr. Kelly's class

why do wages differ across industries

step-by-step explanation :

micro economists are concerned with economics on an industry or individual firm basis.

macro economists are concerned with national and international level

there are many solutions.

step-by-step explanation:

step 1: simplify both sides of the equation.

4x+6=4x^2+10x−4

step 2: subtract 4x^2+10x-4 from both sides.

4x+6−(4x^2+10x−4)=4x^2+10x−4−(4x^2+10x−4)

−4x^2−6x+10=0

step 3: factor left side of equation.

−2(2x+5)(x−1)=0

step 4: set factors equal to 0.

x=-5/2 or x=1