Count by five from 135 to 175 .write these numbers and describe the pattern

Count by five from 135 to 175 means you will increase the number by 5 each time.
The pattern will be as follows:
135
135 + 5 = 140
140 + 5 = 145
145 + 5 = 150
150 + 5 = 155
155 + 5 = 160
160 + 5 = 165
165 + 5 = 170
170 + 5 = 175

The pattern is n+5 where n is the previous number in the pattern.

600,000 pound = 300 tons

3 * 10^n  = 300

10^n = 100

10^2 = 100

so n = 2