HELP ME PLEASE I'LL MARRY U Which exponential function has a growth rate of 0.5%?

A)f(x)=(0.005)(1.005)x

B)f(x)=(1.005)(0.005)x

C)f(x)=(1.05)(1.05)x

D)f(x)=(0.05)(0.05)x

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What is the number 321,000,000 in scientific notation? also what is the number? ?

Girardo is using the model below to solve the equation . girardo uses the following steps: step 1 add 4 negative x-tiles to both sides step 2 add 1 negative unit tile to both sides step 3 the solution is which step could be adjusted so that gerardo's final step results in a positive x-value? in step 1, he should have added 4 positive x-tiles to both sides. in step 1, he should have added 3 negative x-tiles to both sides. in step 2, he should have added 4 negative unit tiles to both sides. in step 2, he should have added 1 positive unit tile to both sides.