Can someone me solve these problems i did accept it on another paper i'm trying to see if i got them all correct i need some

An is a number that is written without a component. it is a number that is either or . an exponent is a or a number that another number is being to. the number that is being raised to a is called the . the or power tells you how many times to the base by . if an exponent is fractional then ask yourself the question: what when multiplied by itself a certain number of times will equal the number?

Solve the proportion of 16/50=x/156.25

Me find the answers and explain the process to find the answer of the problem appreciate it : )