**Answer:**

156 minutes

**Step-by-step explanation:**

2 hrs=120 minutes

3/5 hr=3/5 *60=36 minutes

120+36=156 minutes

hope this helps

brainliest?

**m+n=54 and m=3n+8 is the system of equations that could be used to determine the price of each book.**

**Step-by-step explanation:**

Given,

Total cost of maths book and novel = $54

Let,

Cost of maths book = m

Cost of novel = n

According to given statement;

m+n=54 Eqn 1

the price of the math textbook, m, is $8 more than 3 times the price of the novel

m = 3n+8 Eqn 2

**m+n=54 and m=3n+8 is the system of equations that could be used to determine the price of each book.**

**Keywords: **linear equation, substitution method

**Learn more about substitution method at:**

#LearnwithBrainly

To find the total amount Dave and Mel paid, apply the taxes to their initial purchases.

Dave paid $15 for a baseball. There was an 8% tax added to this total afterwards. To add the tax to the amount Dave paid, convert the percentage into a decimal:

Multiply the cost of the baseball by this decimal to find the tax:

Add the tax onto the cost:

Dave paid $16.20 in total for the baseball.

Mel paid $20 for a football. There is an 8% tax added to this total afterwards. We already have the decimal for an 8% tax, so we can multiply the football's cost by the decimal:

Add the tax onto the cost:

Mel paid $21.60 for the football.

Subtract the bigger cost by the smaller cost:

There is a

**$5.40 difference **between Dave's and Mel's purchases.

**Answer:**

the second one or **B**

**Step-by-step explanation:**

because why not

A palindrome is something that reads the same forwards and backwards.

If the number is a palindrome and it's between 300 and 400, then the

last digit must also be a ' 3 '.

So all we have left to fill in is the digit in the middle.

There are 10 possibilities for that one ... the digits ' 0 ' through ' 9 '.

So there are **<em>10</em>** palindromic numbers between 300 and 400.