Yes they said it right ^^^
Answer:
168
Step-by-step explanation:
12a.
35 + 3c = 45 + 2c subtract 35 from both sides
3c = 10 +2c subtract 2c from both sides
c = 10
A 10 minute phone call would cost the same amount of money with both companies.
12b.
It is better to use Company B when you need to make a longer phone call because the cost per minute is less. For example, an hour long phone call with company A would be $2.15 and the same call with company B would be $1.95.
14.
The problem with Delia's work is that she put the x with the flat rate instead of the daily charge. The flat rate will only be charged once while the daily fee should be multiplied and charged for every day, x. The correct equation would have been 365 + 125x = 250 + 175x.
You can draw one with 2 sides equaling 3, and 2 sides equaling 8. Another one is 2 sides of 4 and 2 sides of 6. I think that those would be the only solutions, assuming we are not going to use decimals or fractions.
Answer:
200
Step-by-step explanation:
15x10= 150 but 5 is over and is in the tenth place meaning you have to bring it up to 200.