Answer:
7
Step-by-step explanation:
Substitution then simplify
<span>Select one equation and solve it for one of its variables.
In the other equation, substitute for the variable just solved.
Solve the new equation.
<span>Substitute the value found into any equation involving both variables and solve for the other variable. </span></span>
Answer: the answer is c or d, im not exaclty positive but i want to say the answer is d.
Step-by-step explanation:
Answer:
His total income is of $1,371.2.
Step-by-step explanation:
His salary is of $500, plus 8% of his sales.
In this question:
Sales of $10,890. So his salary is given by:

His total income is of $1,371.2.
I hope it helps liked it and make it brainliest
so the answer is:y=sin (∅)