A=b+cd
f(a) = 3(a + 2) - 1
Answer:
20
Step-by-step explanation:
first plug it in, then solve. Step by step:
3(5 + 2) - 1
3(7) - 1
21 - 1
20
Answer:
$49
Step-by-step explanation:
We have been given that Eric bought lunch for him and his friends at Papa's Pizza. His bill was $50 with tax. If he used a 15% off coupon and then left a 20% tip based on the discounted ticket.
First of all, we will find amount of bill after 15% discount by finding 85% of $50 as:
Amount paid in tip would be 20% of $42.5, so total amount paid after 20% tip would be 42.5 plus 20% of $42.5.
Now, we will subtract $51 from $100 to find amount of change that is
Therefore, Eric will get $49 in change.
Answer:
49
Step-by-step explanation:
50*0.85 (15% off) = 42.5, 42.5*1.20 (20% tip) = 51, 100-51 = 49