I need to round 621 to the nearest ten

A rental car cost a total of $282 for a week. six students shared the car. how much should each pay? a. $48 b. $35 c. $50 d. $47

The function $f$ satisfies / [f (x) + f (2x + y) + 5 x y = f (3x - y) + 2x^2 + 1/]for all real numbers $x$, $y$. determine the value of $f (10) $.

The graph shows the ages of different concertgoers who have backstage passes. Graph shows age (years) labeled 12 to 48 on the horizontal axis and number of concertgoers on the vertical axis. 3 concertgoers are 12 to 15. 6 concertgoers are 15 to 18.

13.3 billion standard form

Which type of quadrilateral has diagonals that will always divide it into four congruent triangles?

What is the measure of Z in the parallelogram shown? A. 190 B. 90 C. 150 D. 30

Add. (2x4+x3-4x2+3) + (4x4-2x3-x2+10x+2) Express the answer in standard form. Enter your answer in the box.

A rectangular park has a width of 8/9 of a mile and a length 3/5 of a mile. Find the area of the park. Write your answer in simplest form, using a complete sentence explain your answer.

A female grey whale is 2 times as long as a female killer whale. A female killer whale is 7 meters long. How long is a female grey whalevin centimeters?

Raina's fish tank has 17 liters of water in it. She plans to add 5 liters per minute until the tank has more than 52 liters. What are the possible numbers of minutes Raina could add water? Use t for the number of minutes.