Let t : r^n -> r^n be given by t(x) = xb for some basis b. prove that t is a linear transformation.

Jim makes $10.35 per hour. write an equation that jim can use to calculate his pay.

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. after tax the total is 45.99. what percentage of the subtotal is the total?

Could someone me with this question i’ve been stuck on it for 20 minutes