Answer:
5x + 45
Step-by-step explanation:
distribute 5 to both x and 9 so multiply them both
Answer:
$0.84
Step-by-step explanation:
1. find total cost of both the pen and paper
2. find the amount Sally spent
3. find cost of ruler
the domain of f(x)=9-x^2 is (-∞,∞), {x|x ∈r}
499.50 is the total amount of discounts given to senior citizens
