¿Los números que sirven para expresar cantidades no necesariamente enteros se llaman? *

Translate this phrase into an algebraic expression. 21 more than twice goran's savings use the variable g to represent goran's savings. need to know fast.

Solve for x and y: 217x + 131y = 913; 131x + 217y = 827

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!