A store advertises T-shirts: 5 for $13.00. If Hazael spent $20.80 on T-shirts, how many did he buy?

 He bought 8 t-shirts

Step-by-step explanation:

Set up a proportional relationship

If t-shirts equals to $13, then how many t-shirts will equal to $20.80, we will represent that number of t-shirts by the variable x.

13x = 104

x = 8

The answer is in the image 

The total nom of  code that can be used is equal to 5+3 = 8

The answer is in the image 

The answer is in the image 

The solution is given in the image below

The wood before starting =12 feet

Left wood=6 feet

Wood used till now=12-6=6 feet

Picture frame built till now= 6/(3/4)

=8 pieces

Therefore, till now 8 pieces have been made.

The wood before starting =12 feet

Left wood=6 feet

Wood used till now=12-6=6 feet

Picture frame built till now= 6/(3/4)

=8 pieces

Therefore, till now 8 pieces have been made.

Salesperson will make 6% of 1800

=(6/100)*1800

=108

Salesperson will make $108 in $1800 sales

30% of 420 are first year students

first year students = (30/100 )*420

=126 students

Student who are not in first year = 420-126

=294 students