Answer: $5.50
Step-by-step explanation: If the cost for a collect call is $1.50 for the first minute and then $1.00 for each additional minute the cost is $1.50 (first minute) + $4.00 (last four minutes).
Answer: 40km/h
Step-by-step explanation:
distance = 20km
time = 30 min conver to hours. 
velocity = ?
Its simple. You collect like terms and put them on one side of the equation
Answer: D is correctly written in scientific notation.
Step-by-step explanation:
The base has to be between 1 and 10.
A has a base of 16.4 which is greater than 9.
B is not even in scientific because the base it being raise to an exponent
C has 0.71 as base which is less that.
Answer:
0.33
Step-by-step explanation:
