-The table below shows the number of bacteria present in a culture over a 5 hour period, where x is the time, in hours, and y, is the number of bacteria.
X
1
4
0
20
2
75
3
150
5
510
У
40
297

Achemist has 200 ml of a 10% sucrose solution. she adds x ml of a 40% sucrose solution. the percent concentration, y, of the final mixture is given by the rational function: the chemist needs the concentration of the final mixture to be 30%. how many milliliters of the 40% solution should she add to the 10% solution to get this concentration?

Acar travels at an average speed of 56 miles per hour. how long does it take to travel 196 miles

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?