11a+9=4a+30 what is the answer

Amy will rent a car for the weekend. She can choose one of two plans. The first plan has an initial fee of $50 and costs an additional $0.80 per mile driven. The second plan has no initial fee but costs $0.90 per mile driven.

For the following question find the volume of the given prism 12.1 cm 5.3 cm 4.2 cm

What is the density in kilograms per cubic centimeter of 0.0 2.391 and 0.0197 together

What is 2 6/8 in fraction form?

The sign shows the costs associated with a whitewater rafting trip. Write an expression to determine the cost of 3 children and 1 adult renting equipment for a whitewater rafting trip that lasts h hours

Sarah had to limit her fat intake to 25% of total calories if the fat intake is 550 calories what is the total number of calories she consumed for the day

Two cars start at the same time, but travel in opposite directions. One car's average speed is 80 miles per hour (mph). At the end of 4 hours, the two cars are 520 miles apart. Find the average speed in mph of the other car. (Enter an exact number.

Bao can eat 12 chicken wings in 3 minutes. She eats the chicken wings at a constant rate.

An airplane leaves the airport at 2 pm and travels 650 mph to its destination. A second plane leaves at 6 pm and travels 800 mph. How long before the second plane reaches the same distance as the first plane?

The combustion of 0.25 mol of an unknown organic compound results in the release of 320 kJ of energy. Which of the compounds in the table could be the unknown compound?