Solve the system.

{j+k=3

{j-k=7

Use the substitution method.

A. The solution is (5, - 2).

B. There is no solution.

C. There are an infinite number of solutions.

D. The solution is (8, 1).

One section of the auditorium has 12 rows of sits each row has 13 seats what is the total of seats in that section

Each week, Joey gets paid $10 plus $2 for each chore he does. His sister Julie gets paid $5 plus $3 per chore. Write an expression for how their parents pay joey and julie each week if they do the same amount of chores.

The average 8 year old gets 30 questions right on an intelligence test, whereas the average 12 year old gets 50 questions right. What is the mental age of an 8 year old who gets 50 questions right?

If a triangle has a perpendicular, does that mean it is an equilateral triangle?

What is the area? 4 m 10 m square meters What is the formula

A certain hybrid car can travel 1 4/11 times as far as a similar non hybrid car can, each on one gallon of gasoline. If the non hybrid car can travel 33 miles per gallon of gasoline how far can the hybrid travel on 4/5 gallon of gasoline?

What is the value of 6x+4x+8, when x=7

There are 46 runners in a race. how many ways can the runners finish first, second, and third

Which composition of transformations would be the inverse of rotating a figure 90° counterclockwise and then reflecting it over the x-axis?

At the city museum, child admission is $ 5.20 and adult admission is $ 9.40. On Monday, 148 tickets were sold for a total sales of $ 1051.00. How many child tickets were sold that day?