suraiaapolinario suraiaapolinario

13-06-2021
Mathematics

contestada

write an exponential function in the form y = ab^x that goes through points (0,20) and (8,5120)

Respuesta :

sqdancefan sqdancefan

13-06-2021

9514 1404 393

Answer:

y = 20·2^x

Step-by-step explanation:

Use the given points to write two equations, then solve for 'a' and 'b'.

20 = a·b^0 = a

5120 = a·b^8 = 20·b^8 ⇒ 256 = b^8

b = 256^(1/8) = 2

Your function is ...

y = 20·2^x

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