It seems that some the work is already here, but I'd be glad to!! So for #3 which is 9x^2+15x, we can factor out both a 3 and an x (3x) so we know that 3x * 3x =9x^2 and 3x * 5 = 15x so once we take the 3x out of the equation, we are left with 3x(3x+5) and that's as far as you can factor.
For #4, we see that the common factor is 10m because 10m * 2n = 20mn and 10m * 3 = 30m so once we take 10m out of the original, it becomes 10m(2n-3)
For #5, this one the common factor is 4xy because 4xy * 2xy=8x^2y^2 and 4xy*x= 4x^2y and 4xy*3=12xy so once we take the 4xy out of the equation, it becomes 4xy(2xy-x-3)
Hope this helps!
Answer:
7 girl gifts and 4 boy gifts
Step-by-step explanation:
7 girls gifts = $14
4 boy = $4
total = 18
Answer:
8.
Step-by-step explanation:
Dado que Laura tiene 40 láminas repetidas, si coloca 5 de estas láminas en cada página de su álbum, para determinar cuántas páginas de su álbum podrá Laura completar se debe realizar el siguiente cálculo:
40 / 5 = Cantidad de páginas
8 = Cantidad de páginas
Así, colocando 5 láminas por página, Laura podrá completar 8 páginas de su álbum.
1 inch of the model - 18 inches of the car
9 inches of the model - x inches of the car

The car is 162 inches long.
Answer:
23 or more chairs.
Step-by-step explanation:
There are 5 tables to start. Each tables is 450 dollars.
5x450=2250
4500-2250=2250
2250(money still need to be made) divided by 100(the price of a chair)=22.5
Since you can't have a half of a chair but you cant have any less, you round it up to 23 chairs. The answer is 23 or more chairs.