$\text{Use FOIL method:}\ (a+b)(c+d)=ac+ad+bc+bd\\\\(x+1)(x+2)(y-3)=[(x)(x)+(x)(2)+(1)(x)+(1)(2)](y-3)\\\\=(x^2+2x+x+2)(y-3)=(x^2+3x+2)(y-3)\\\\=(x^2)(y)+(x^2)(-3)+(3x)(y)+(3x)(-3)+(2)(y)+(2)(-3)\\\\=\boxed{x^2y-3x^2+3xy-9x+2y-6}$

6 0

3 years ago

Which of the following is a quadratic function?

sp2606 [1]

A is the answer, because the highest exponent is 2.

<u>quadratic</u>

A's expression foiled would be 2x^2 + x - 6

B's expression foiled would be 3x - 12, where the exponent on x is only 1.

D's expression foiled would be x^3 - x^2 - 12x, where the exponent on x is 3.

6 0

3 years ago

Help please i need it asap

Levart [38]

The correct answer would be 6

8 0

3 years ago

A shirt is originally priced at $19.99. it was marked down 25%. what is the sale price?

Bond [772]

Answer:

Final price: $14.99

Step-by-step explanation:

Discount= original price x discount % / 100

Discount= 19.99 x 25/ 100

Discount= 499.75/100

You save= $4.9975

Final Price= original price - discount

Final price= 19.99 - 4.9975

Final Price= $14.9925

Final Price= $14.99

8 0

3 years ago