Answer:
a: 42%
b: 68%
Step-by-step explanation:
X(x+8)=(x+4)(x+3)
x^2+8x=x^2+7x+12
x=12
original length = 20
original width = 12
next length = 15
next width = 16
3300 exemption
37,500−3,300=34,200 taxable
Tax rate is
2+3/4=2.75% we don't multiply 2by 3/4
Now calculate the amount of tax
34,200×2.75%=940.5
X+3x-11=4
4x=4+11
x=15/4
x=3.75