If a = -3n + 2, and b = 5n - 7, what is the value of a + b, in simplest form? a. 2n + 9 b. -8n - 5 c. -3n d. 2n - 5

-3n+2+5n-7=

2n+2-7=

2n-5 (d)

answer: the first one

step-by-step explanation: use a calculator and divide the minutes by the dollars.

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