5z - 20 - 2 + z for z = 8.

26

Step-by-step explanation:

Substitute each x with 8.

5(8)-20-2+8  Using the order of operations, multiply before adding.

40-20-2+8    For me, it's easier to add and subtract from left to right.

20-2+8

18+8

26

Hope this helped you out...have a wonderful day c:

b.) 160 miles on a 5 gallons car

step-by-step explanation:

240/10=24 miles/gallon

160/5=32 miles/gallon

30/1=30 miles/gallon

168/6= 28 miles/gallon

32 miles/gallon is the most amount, so this is the best.

wholesale price is the initial price before markup. retail price comes after the markup.

a price of 8 bucks that's marked up by 100%   is

formula: initial price + (percent markup in fraction/decimal)(initial price)

8+(1)(8)

8+8

16

retail price is $16.