HEL ASAP!!! Write an expression that models the sum of your brother's earnings for 3 weeks and your sister's
earnings for 2 weeks if they each work r hours per week and your sister receives $15 in tips per
week. Simplify the expression.

answer:  

step-by-step explanation:

odd numbers are only divisible by 1 and itself.

even numbers are divisible by more than 1 and itself.

for example 6 is even because it is divisible by more than 1 and its self. 1 x 6= 6 ; 2 x 3= 6

and 7 is odd because only 7 x 1 equals seveb