Neptune's average distance from the Sun is 4.503 *10^9 km. Mercury's average distance from the Sun is 5.791â‹…10^7 km. About how many times farther from the Sun is Neptune than Mercury? Answer in scientific notation.

49xy +34y - 72z. determine the degree of the polynomial

Idont understand math at all! : o( use this scenario to answer the remaining questions: brenton purchased a new bedroom set for $4,500.00. he lives in arizona and pays a 8.75% sales tax. if he made a 50% down payment and financed the rest, what amount did he finance? what is the total sales tax brenton will pay? enter your answer in currency format, round to the nearest cent. what was brenton's total amount financed? enter your answer in currency format, round to the nearest cent.

Maria walks a round trip of 0.75 mile to school every day.how many miles will she walk in 4.5 days