Identify the terms coefficients and constants in the expression 20x+13

When benny’s sister penny is 24, benny’s age will be 125% of her age. how old is lenny? a) how old will benny be then? b)if benny is 12 years old now, how old is penny now? explain your reasoning.

Write the system of equations represented by the matrix. 0 1 2 4 -2 3 6 9 1 0 1 3

The sum of the reciprocal of a positive number and the reciprocal of 2 more than the number is 3/4 equation: the number is