How do i check solutions algebraically

The distance from Earth to Pluto is 4806000000 km. Write this number in scientific notation.

Expand: In (4a) ^3 - 3 In 4 + In a - 3 In 4 - 3 In a - 3 In 4 + 3 In a

Joe was given $20 for his birthday. He then saved $10 per week from his allowance. Write a function to represent this situation

104, 137, 154, 131, x, mean = 130

Is 3/8 greater than less than or equal to 3/4

What is the probability of getting heads when flipping a coin and getting a number greater or equal to 3 when rolling a single. die

60% of 220 is what number?

Christopher bought a new pair of shorts at the store when they were having a 5% off sale. if the regular price of the pair of shorts was $17 how much did christopher pay with the discount?

A shape can have more than 360° of rotational symmetry. True or False

If a road sign is red then it is a stop sign"" what is the converse for this statement