Answer:
B
Explanation:
To find the sales tax on a purchase of $49, what we simply do is to find 7% of $49. This means that we do the percentage calculation. To do this , we simply place 7 all over 100 and multiply by the purchase amount
This can be written as 7/100 * 49 and this is same as 0.07 * $49
B is the correct answer