How many parallel lines does a triangular prism have

Can some one explain how to slove specifically, what is the value of x? 0.9(x+1.4)-2.3+0.1x=1.6 enter the answer as a decimal in the box. x= ?

If abcde is reflected over the x-axis and then translated 3 units left, what are the new coordinates d? are he re

Yvaries inversely as x. y =12 when x=5. find y when x=4