At the beginning of a journey, the fuel tank of a car was 3/4 full. when the car reached its destination, it had consumed 60% of the gasoline in the tank. the full capacity of the fuel tank is w gallons.
a. write an algebraic expression for the amount of gasoline left in the fuel tank.
b. if w = 15.5, how much gasoline was left at the end of the journey?

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15

Michelle and julie work at a catering company. they need to bake 264 cookies for a birthday party that starts in a little over an hour and a half. each tube of cookie dough claims to make 36 cookies, but michelle eats about 1/5 of every tube and julie makes cookies that are 1.5 times as large as the recommended cookie size.it takes about 8 minutes to bake a container of cookies, but since julie's cookies are larger, they take 12 minutes to bake. a. how many tubes should each girl plan to bake? how long does each girl use the oven? b. explain your solution process what did you make? c. what assumptions did you make?

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