Joslynn makes $8.25 per hour babysitting. If she made $123.75 last week, then how many hours did she work last week?

If 20% of a number is 35, what is 50% of that number?

Kayla and alberto are selling fruit for a school fundraiser. customers can buy small boxes of grapefruit and large boxes of grapefruit. kayla sold 3 small boxes of grapefruit and 1 large box of grapefruit for a total of $65. alberto sold 1 small box of grapefruit and 1 large box of grapefruit for a total of $55. what is the cost each of one small box of grapefruit and one large box of grapefruit?

The ph level of a blueberry is 3.1 what is the hydrogen-ion concentration [h+] for the blueberry