Answer:
t = 6m + 9g.
Step-by-step explanation:
Total number of batteries is t.
Given
Required
Find
Express 32 as an exponent
By comparison:
So:
38
Given that,
x = -4
f(x)=x² - 4x +6
so,
f(-4)= (-4)² - 4 . (-4) +6
=16 +16 +6
= 38
She rode her bike 21 miles