FIR and beta are the zeros of 2 X square + X - 3 find the value of one by alpha + 1 by beta​

Find a number such that if you add 8 and divide the result by 4 you will get the same answer as if you subtracted 3 from the original number and divided by 2

Astocks price gained 3% in april and 5% in may and then lost 4% in june and 1% in july during which month did the stocks price change the most

How is the interquartile range calculated?