Final answer:
Sam will have $945 saved after 6 months.
Step-by-step explanation:
To find out how much money Sam will have saved after 6 months, we need to find the total amount saved by multiplying the monthly amount by the number of months. Sam is saving $150 a month, so after 6 months, he will have saved 6 * $150 = $900. Adding this to the amount he currently has in his bank account ($45), Sam will have a total of $900 + $45 = $945 after 6 months.