Answer:
x= -66
Step-by-step explanation:
a. n= 1x +7
b. n= 12 + 4x
Multiply both sides by negative four to get rid of the fraction
j+18=-32
subtract 18
j=-50
√308 or 17.5
c^2=a^2+b^2
c^2-a^2=b^2
Substitute
18^2-4^2=b^2
324-16=b^2
b^2=308
b=√308 or b=17.5
