Which pair of lines is perpendicular?

A. y=2x-1 and 2y=-x+3

B. y=3x+4 and 3y-x=5

C. y=-4x+2 and x+4y=6

D. y=-6x-3 and 6x-y=4

The cost C (in dollars) to rent the convention hall is C = 10x + 1500, where x is the number of admission tickets. Admission tickets to the convention are $16 each.

A hat salesman earns a commission of 30% of all hat sales made. Yesterday he sold 3 hats for $90 each and 4 hats for $50 each. How much did he earn in commission yesterday?

Solve the inequality 2 (4x-3) >-3 (3x) + 5x

A model of a famous statue is 2 1/2 inches tall. The actual statue is 3 1/3 feet tall. What is the ratio of the height of the model to the height of the actual statue in simplest form.

What does m repersents m + 2.43 = 3 m = ?

What is 80% expressed as a fraction in simplest form

A school debate team has four girls and six boys. A total of four of the team members will be chosen to participate in the district debate. What is the probability that two girls and two boys will be selected?

You have money in an account at 6% interest, compounded monthly. To the nearest year, how long will it take for your money to double.

Theresa went bowling on tuesday night. she bowled scores of 150, 165, and 165. what was her mean average score?

At a party there were four large submarine sandwiches all the same size. during the party 2/3 of the chicken sandwich, 3/4 of the tuna sandwich 7/12 of the roast beef sandwich, and 5/6 of the veggie sandwich were eaten.