For questions 7 and 8, combine like terms to create an equivalent expression 7) 7c +24 - 19 + 5c - 2c 8) 9f - 4f - 17 + 10 - 2f

Step-by-step explanation:

7) 7c +24 - 19 + 5c - 2c

The unknown term is c. We would rearrange the expression such that all the terms containing c are together and simplified and all the constants are also to together. It becomes.

7c + 5c - 2c + 24 - 19

= 10c + 5

= 5(2 c + 1)

8) 9f - 4f - 17 + 10 - 2f

We would collect the like terms. Terms containing the unknown, f would be made to stand together while the constant will also be together. It becomes

9f - 4f - 2f - 17 + 10

3f - 7

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

step-by-step explanation: