Question

1. robert has fifty dollars. he spent $38.63 at the grocery store, then spent another $2.89 at the hardware store. how much money does he have left?
2. write the prime factorization of 130.
3. what is the gcf of 45 and 60? gcf:

Explanation:

Question 9

Step1: Calculate total spent

Total spent = $38.63 + $2.89 = $41.52

Step2: Subtract from initial amount

Money left = $50 - $41.52 = $8.48

Step1: Divide by smallest prime

130 ÷ 2 = 65

Step2: Divide 65 by next prime

65 ÷ 5 = 13

Step3: 13 is prime, so stop

Prime factorization: 2 × 5 × 13

Step1: Find factors of 45

Factors of 45: 1, 3, 5, 9, 15, 45

Step2: Find factors of 60

Factors of 60: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60

Step3: Identify greatest common factor

GCF is 15

Answer:

\$8.48

Question 10