The expression 0.07x+(x−300) models the final price of a television set with an instant rebate in a state that charges a sales t
ax. Enter the expression in the box that represents the price of the television set after the instant rebate is applied and before the tax is applied. $
The variable x represents the original price of the television set. 0.07x is the expression that represents the amount of tax on the purchase (0.07 is the decimal form of 7%).
x-300 represents the original cost of the television subtracted by 300; this would be the amount of the television after the rebate.
Speed is the magnitude in a velocity. It is a scalar quantity so it does not have direction unlike velocity which is a vector quantity. Speed and velocity refers to the distance traveled by a moving object per unit of time. We calculate speed as follows:
Speed = distance / time = 84 miles / 2 hours Speed = 42 miles per hour
