Which of these relations are functions?

y = 5x = - 2

y = 2x - 5

2y = x - 4

Ashira has $40. She buys 5 plants for $6.20 each. How much money does Ashira have left? A. $9.00 B. $9.80 C. $31.80 D. $33.00

A 40-foot ladder is leaning against a wall. To use the ladder safely, the angle between the wall and the ladder must be no more than 15 degrees. A worker places the bottom of the ladder 12 feet from the wall, and begins to climb. is the worker safe?

Celebrity Ping-Pong player #1 only gets 2 autograph requests per year. Celebrity Ping-Pong player #2 only gets 3 per year. How many years will it be before the two of them together have received 55 autograph requests?

Harry drove for 5 hours on the freeway, then decreased his speed by 20 miles per hour and drove for 2 more hours on a country road. If his trip was 380 miles, then what was his speed on the freeway?

To which set of numbers 7/8 belong? •rational •integer •irrational •whole

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.

What is the surface area of a conical grain storage tank that has a height of 43 meters and a diameter of 14 round to the nearest square meters

There are 8 rulers in the drawer Sara took 3 rulers from the drawer how many rulers are now in the drawer

What is the value of "c" in the quadratic equation 3x 2 + 5x + 7 = 0?