7) A school store buys pencils for $0.15 each. •It sells the pencils for $0.22 each.
• The store sold 4 dozen pencils last week.
How much profit did the school store make from pencils?

9514 1404 393

  $3.36

Step-by-step explanation:

On each pencil, the profit was ...

  pencil profit = pencil price - pencil cost

  pencil profit = $0.22 -0.15 = $0.07

The number of pencils sold was ...

  (4 dz)(12 pencils/dz) = 48 pencils

Then the total profit was ...

  (48 pencils)($0.07 /pencil) = $3.36

The store made a profit of $3.36 from pencils.

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