two adjacent angle sof a parallelogram are (3x‐4) degrees and ( 3x + 16) degrees . find the value of x and hence find the length of each side​

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?

The graph shows the charges for a health club in a month. make a function table for the input-output values. writes an equation that can be used to find the total charge y for the number of x classes

Find the commission on a $590.00 sale if the commission is 15%.