Answer:
b=-0.8
Step-by-step explanation:
90-b=90.8
b=90-90.8
b=-0.8
5
2 = 32
Exponents are like a simplified or easier version of multiplying
2*2*2*2*2
People use exponents in real life. For an example, they use it for finding cubic feet ,square feet, or area of something or an object.
Sorry if I am bad at explaining this or if I confused you