Multiply by a Monomial

2n⁴ * 5n⁴

• 7n⁴
• 10n¹⁶
• 10n⁸
• none of the above

2n⁴ * 6n⁴

• 8n⁴
• 12n⁸
• 8n¹⁶
• none of the above

(3c²)(10c⁷)

• 13c⁹
• 30c⁵
• 30c⁹
• -30c⁹

• 10x⁹
• 24x¹⁴
• 24x⁹
• 10x¹⁴

• -35y⁶
• -35y⁵
• -2y⁶
• -2y⁵

(3c²)(10c⁷)

• 13c⁹
• 30c⁵
• 30c⁹
• -30c⁹

6m³n³ * 8m²n³

• 48m⁵n⁹
• 48m⁶n⁶
• 48m⁵n⁶
• none of the above

6k² * k

• 6
• 6k
• 6k²
• 6k³

7v³ *10u³v⁵ 

• 70u³v⁶
• 17u³v⁸
• 70u³v⁸
• none of the above

9xy² * 9x⁵y²

• 81x⁶y⁴
• 18x⁶y⁶
• 9x⁶y⁴
• none of the above