Multiply (4^2+3y) by (3x^2 - 4y) and verify the result for x = 1, y = 2​

Can someone me my sister? she is in third grade. 50 points and brainlist! ones that are not answered. plz and thx!

Jada has a meal in a restaurant she adds up the prices listed on the menu for everything they ordered and gets a subtotal of $42.00. when the check comes, it says they also need to pay $3.99 in sales tax. what percentage of the subtotal is the sales tax

Reinel saves 30% of every pay check. his paycheck last week was 560$. how much did reniel save last week?