Pluto is 5,560,000,000 years old. Estimate the age of Pluto by writing it in the form of x * 10^y years, where x and y are single-digit numbers. 6 * 10^9
6 * 10^8
5 * 10^9
5 * 10^8

The line y = x + passes through (−3, 7) and is parallel to y = 4x − 1.

The triangles are similar. what is the value of x? show your work.

Eric has challenged himself to walk 24,000 steps in 4 days. if eric walks the same number of steps each day, which function represents the number of steps eric still needs to walk to reach his goal with respect to the number of days since he started his challenge? a. y = 8,000x − 24,000 b. y = -8,000x + 24,000 c. y = 6,000x − 24,000 d. y = -6,000x + 24,000