all expression represent how much Judith spent.
Answer:
Question:
Judith's grandmother paid her x dollars a week to mow the lawn during the summer.
Judith decided to save some of her money and spend the rest. For the first 4 weeks, Judith put $10 per week into savings. For the next 8 weeks, she put $15 per week into savings.
Solution given:
Judith's grandmother paid her x dollars a week
it means Judith's income per week is x.
Judith decided to save some of her money and spend the rest.
For the first 4 weeks, Judith put $10 per week into savings.
it mathematical expression it is expressed as:
4(x-$10)
again
For the next 8 weeks, she put $15 per week into savings.
it mathematical expression it is expressed as:
8(x-$15)
now,
Judith's have
4(x-$10)+8(x-$15) it represent 1st expression.
solving above equation
(4x-$40)+(8x-$120) represents 4t h expression.
(4x+8x)-($40+$120) represents 2nd expression.
12x-$160 represents 3rd expression.
