Justin bought 40 packs of baseball cards for a discounted price of $64. if he sells 10 pack of baseball cards to a friend at cost, how much should he charge

$16

Step-by-step explanation:

If Justion bought 40 packs of baseball cards for $64 we can determine the price of per pack:

= $64/40 packs = $1.6 per pack of baseball cards

If Justin wants to sell the baseball card packs he would have to charge:

= $1.6*10 = $16

At cost price, he must sell 10 card packs for $16.

a. -0.3 > -0.33

u = -(6/7)w

step-by-step explanation:

place all values with 'u' on one side of the equation.

4u + 8w = - 3u + 2w

4u + 3u = 2w - 8w

further simplify the equation by solving the addition and subtraction.

7u = - 6w

make 'u' the independent variable by placing its co-efficient on the right-hand side.

u = - (6/7)w