Amedium sized apple has 70 calories . this is 10 calories less than 1/4 of the calories in an old westie choclate bar. we need to find out how many calories are in the choclate bar. choose the best model for the first step in this problem

320 calories.

Step-by-step explanation:

It is given that a medium sized apple has 70 calories .

This is 10 calories less than 1/4 of the calories in an old westie chocolate bar.

Let the calories in an westie chocolate bar = x

Now we establish an equation and find the value of  x

x - 10 = 70

x = 70 + 10

x = 80 × 4

x = 320

An old wetie chocolate bar has 320 calories.

13875138answer:

step-by-step explanation:

use a calculator!

30 miles

step-by-step explanation:

we know that 60 seconds equals 1 minute and 60 minutes 1 hour

44 ft       60 sec     60 min     158400   ft

  *   *   =

1 sec       1 min       1 hour         hour

we know that there are 5280 ft per mile

158400   ft       1 mile         30 miles

  *   =

1   hour               5280 ft     1 hour

so in 1 hour   it can travel 30 miles