4. Jiy has 5 test scores of 67, 75, 81, 84 and 88. He would like to make a B in the class. The lowest B is 80%. If all 6 tests are equally weighted, what is the lowest score Jiy can get on his 6th test and still get
a B in the class?

An airplane consumes fuel at a constant rate while flying through clear skies, and it consumes fuel at a rate of 64 gallons per minute while flying through rain clouds. let c represent the number of minutes the plane can fly through clear skies and r represent the number of minutes the plane can fly through rain clouds without consuming all of its fuel. 56c+64r < 900056c+64r< 9000 according to the inequality, at what rate does the airplane consume fuel while flying through clear skies, and how much fuel does it have before takeoff? the airplane consumes fuel at a rate of gallons per minute while flying through clear skies, and it has gallons of fuel before takeoff. does the airplane have enough fuel to fly for 60 minutes through clear skies and 90 minutes through rain clouds?

Pls the last one and it has to be like number 6

Aramp rises 4 feet over a distance of 10 feet. what is the length of the ramp?