A bag contains 150 cubes that are black, yellow, and white. A student randomly selects a cube without looking and replaces it in the bag. If the student selected 3 black cubes, 8 yellow cubes, and 4 white cubes, which of the options below show a reasonable estimate for the total number of a certain cube in the bag? Select all that apply.
A) 80 yellow cubes
B) 30 black cubes
C) 60 black cubes
D) 40 white cubes
E) 120 yellow cubes

problem:

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

f(5/2) = 10/3

i hope this !

x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

step-by-step explanation:

last month maria hiked the 5-mile mountain trail a number of times and she hiked the 10-mile canal trail several times. let x represent the number of times she hiked the 5-mile trail, and let y represent the number of times she hiked the 10-mile trail. if she hiked a total of 90 miles, which equation can be used to find the number of times maria hiked each trail? x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

step-by-step explanation: