& Let x be a positive integer. When 12 is added to twice the integer right after x, the result is 38.
(i) Express the positive integer right after x in terms of x.
(ii) Construct an equation in terms of x.
(iii) Find the positive integer denoted by x by solving the above equation.

2. A factory worker receives p rupees as his daily wage
and an additional 100 rupees as an allowance for each
day he works. He worked 20 days during a certain
month and received 20 000 rupees in total. What is his
daily wage?

3 A father's age is a years and his son's age is 31 years. 5 years ago the son's age
was one year more than 1
2 the age of his father at that time.
(i) What was the son’s age 5 years ago?
(ii) Write the father's age 5 years ago in terms of a.
(iii) Construct an equation in a using the above information.
(iv) Find the father's present age by solving the equation.

he used the algebra tiles correctly.

step-by-step explanation:

given : 3x(2x-1)

solution :

since he used algebra tiles .

armando's solution is the same in the solution shown in figure

as he distributed 2x into x and x and wrote them vertically

and also write   -1 vertically

and 3x into x and x and x and wrote it horizontally

performing the multiplication in the algebra tiles we get

and solving the given expression :

3x(2x-1)

since solving the expression using tiles   and solving the expression algebraically we get the same answer

thus   we can choose the first statement as the answer to this problem which is "he used the algebra tiles correctly".

may i see the picture? it would a lot, xox

well if he bought them at 5 cedis each sold them at 7 cedis each then he would make a profit of 2 cedis of each book. if in total he made 150 cedis profit that means he sold 75 books. he lost 12 books at the start so that means he originally bought a total of 82 books.

step-by-step explanation: