Mrs Tham bought z bottles of oil at $7 each. She gave the cashier $50. [a]Find the change Mrs Tham received in terms of z.
(b) If z = 3, how much change did Mrs Tham receive?

Subscriptions to a popular fashion magazine have gone down by a consistent percentage each year and can be modeled by the function y = 42,000(0.96)t. what does the value 42,000 represent in the function?

Shane and abha earned a team badge that required their team to collect no less than 20002000 cans for recycling. abha collected 178178 more cans than shane did.

By what fraction name for 1 must 2/3 be multiplied to form a fraction with a denominator of 15