An adult elephant eats about 300 pounds of food each day. Write an expression to represent the number of pounds of food a heard of 12 elephants eats in 5 days.

The first week samantha learned to read braille, she could read 10 words per minute. in the second week she increased her speed by 20%. in the third week she increased her speed again by another 25%. how many words could she read per minute by the third week? hurry and tell me!