Answer:
a) 4, b) 10
Step-by-step explanation:
a)
1) - 7 + 3 = - 4
2) | - 4| = 4
b)
1) |- 7| = 7
2) 7+3 = 10
B = 2x+4
H = 3x-5
A = bh
= (2x+4)(3x-5)
= (2x)(3x)+(2x)(-5)+(4)(3x)+(4)(-5)
= 6x^2 - 10x + 12x - 20
= 6x^2 + 2x - 20
So the answer is A (6x^2 + 2x - 20) (i think)
