What is the y-intercept of the line described by the equation y = 7x+4

A kite has side lengths of 2 feet and 4 feet. Each side length is increased by the same number of feet. The expression represents the perimeter of the larger kite:

A waitress who worked k hours earned $32 in tips. She gets an additional salary of $4.50 per hour. Write an algebraic expression to find the amount she earned.

Mei won 61 lollipops playing horseshoes at the county fair. At school she gave two to every student in her math class. She has nine remaining. How many students are in her class?

We define this as the middle most number in a set of numbers arranged in numerical order.

Maria rounded 19.95 to the nearest tenth, she found the number changed to 20

Suppose that the number of inhabitants of country a is given by y=-7.24x+937.69 million, and the number of inhabitants of country b is given y=2.16x+834.29 million, where x is the number of years since 1960.

What is the sum of the geometric sequence 1, 3, 9, if there are 11 terms?

What is the volume of a sphere if the radius is six

The graph shown here displays the distance, in miles, traveled by an airplane in a certain number of hours.

A summer camp is providing breakfast for 350 children that includes a 6 ounce serving of sausage per student. The camp can only purchase sausage in whole 1 pound packages.