Write the augmented matrix for the system of linear equations. (Do not perform any row operations.) {x − y + 3z = 3
{9x − 4y + z = −1
{3x + y = 0

Asmall foreign car gete 42 miles per gallon and user 35 gallons on a trip.gasoline costs $1.05 per gallon.what was the cost of gasoline per mile driver?

The spring the owner of a sporting good store decreases the price of winter gloves from $10 to $8 each increases the price of swimming goggles from $8 to $10 without doing the math you think the percent decrease in the price of the gloves the same as the percent increase of the goggles explain why or why not

Evaluate the expression for the given value of the variable 7a - 4a for a =8