The quadratic model f (x) = - 5x2 + 200 represents the approximate height, in meters, of a ball x seconds after being dropped. The ball is 50 meters from the ground after about how many seconds?

2.45

3.16

5.48

7.07

What is 1,000 times 11

If 3x-5=10 then 3x=15

14.347 rounded to the nearest tenth on a number line

so i just started modeling and two step inequalities and my question is 62°f and it drops 2 degrees every hour. How many hours was it before the temperature was below 40°

What is the sum of the additive inverse and multiplicative inverse of the number 1.2

Write 100,000 as a power of 10.

An investor bought 3 shares of stock A and 2 shares of stock B for a total of $41. Stock a costs $2.00 more per share than stock B. What is the cost of a share of stock a in dollars?

There are approximately 3.33.3 million deaths per year in country a. Express this quantity as deaths per minute.

The quotient of a number dividend by 11 is 0.5

3. If Earth was 10 times farther away from the sun than it is now, which planet would it be closest to? (Assume all the planets are aligned with the sun and are on the same side of the sun.) Compare Earth's new distance to that planet.