Very easy problem ! will be marked brainliest : )
there are 79 students in the third grade. mrs. henry's class has 12 boys and 11 girls. katy estimates the number of students who are not in mrs. henry's class. she rounds all the numbers in the problem and finds an answer of about 60. is katy's estimate reasonable? how do you know?

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?

25 ! the line of best fit is h = 5a + 86. predict the height at age 16.

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. 4x^2 + 20x + 25 = 0