E is 5 more than d. f is 7 less than d.
a) Write an expression for e in terms of d.
e=d+5
b) Write an expression for fin terms of d.
f=d-7

c) Work out e-f
Simplify your answer.​

rx and sx

step-by-step explanation:

add an image

step-by-step explanation:

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

using pemdas, (order of operations) you'll see the answer is 24.