Answer:
answer is 347.6
Step-by-step explanation:
21/7300= 347.6
70percent =42
100percent ×42 ÷70
100/7×42
10/7×42=60
therefore the original cost was $60
x > - 5
4.12
A^2+b^2=c^2 so 8^2+b^2=9^2 so 64+b^2=81 so b^2=17 so b=4.12