Answer:
A. 60 miles per hour
B.120 customers per day
C.2.5 meters per second
D. $1.59 per pound
Step-by-step explanation:
Here we are asked to determine the unit rate for each one of the options given. By unit rate we mean the quantity for per unit quantity . Hence in order to find that we divide the two and quotient is our unit rate. Let us see how:
A. 420 miles in 7 hours
Unit rate = 
Unit rate = 60 miles per hour
B. 360 customers in 30 days
unit rate = 
Unit rate = 120 customers per day
C. 40 meters in 16 seconds
Unit rate = 
Unit rate = 2.5 meters per second
D. $7.96 for 5 pounds
Unit rate = 
Unit rate = $1.59 per pound
.0625 ...........................................................................
19 is a prime number, so the prime factorization is 1*19
1047 minutes. As long as the period billed for was 1 month.
F(x)=2^x+6
let f(x) = n
f^-1(n) = x
x = 2^n + 6
x - 6 = 2^n
2^n = x - 6
log 2^n = log (x-6)
n log 2 = log (x-6)
n = (x-6)/2
f^-1(x) = (x-6)/2