👉🏼Calculate

👈🏼Find x in the following diagram:

👆🏼Masha runs 2.25km in 5 minutes. Calculate here average speed in metres per second (m/s)

👇🏼Expand and simplify: (x+2)(x+5)(2x-1)

🖐🏼Given that 16^x=4^10-x, find the value of x