The distance from earth to the moon is 384,400 kilometers. what is this distance expressed in scientific notation?

3.844e5 kilometers
3.844 × 105 kilometers
3.844e-5 kilometers
3.844e-6 kilometers
3.844 × 106 kilometers
3.844e6 kilometers
3.844 × 10-6 kilometers
3.844 × 10-5 kilometers

d

step-by-step explanation:

given

y + 3 = - 4(x - 2) ← distribute the parenthesis

y + 3 = - 4x + 8 ( subtract 3 from both sides )

y = - 4x + 5 → d

the revenue of the fitness center, y, is the product of two factors: the number of members and the fee paid by each member. there are 320 members now, but number of members goes down by 10 for each $5 increase in fees, so if x is the number of $5 price increases then members is equal to (320 - 10x). since the fee is currently $45, and the fee increases by $5 for every price bump x, the fee is given by (45 + 5x). so, revenue y is given by y = (320 - 10x)(45 + 5x).